I hope you like the advice here, because I wasted far too much productive time on this.
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Two hour speed charcoal self-portrait done for my drawing 1 class final, taken via digital camera in unideal lighting conditions because I honestly have no other methods of digitizing it.
There are a million and a half problems I am constantly beating myself over and no real way of knowing how to deal with them. Whenever I go practice things just sorta turn out different. It's like a completely different person drawing when I practice at home and in class. I should probably upload my doodles, because they are the reason I'm so frustrated with this skill. I can't doodle. I can't sketch i can't practice.
I really need advice on how to get the right mindset for making this stuff work.
You're probably not around to listen to this, but I'm going to tell you anyway because it'll be useful for other people too.
Good eye detail is paramount for a picture to have "soul". Notice how your drawing's eyes are matte and your pupils are pinpoints. Now, look at a real eye:
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A few things you'll notice:
- The sclera does lot look pure white. This is because the eyeball is a sphere, and should be modelled as such.
- The eye has a slight specularity to it. The visibility of this varies in different lighting conditions, but the property will always be present. Always keep this in mind.
- The iris is not matte - in fact, it is full of fascinating detail. You do not have to model this precisely, but trying to do so the first few tries is a good exercise, after which you can try to apply your own artistic intuition.
- The pupil is never, ever pinpoint unless you're staring into a lightbulb that is a hand's width from your eye (don't do this).
Besides this main flaw, there are also a few others that degrade the quality of the picture:
Don't make artificial outlines on shapes. In fact, never make outlines on shapes, because almost all outlines are artificial. For examples, look on the sides of the nose and on the bottom edge of the hair (that is outlined against the forehead). These outlines never exist, and should never be drawn (unless you're doing shitty cartoons like a douche). Here's a good example with a similar face:
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Note how none of these outlines are present on the face. The sides of the nose are darker because the planes than make up the sides are tilted away from the light. The edges of the forehead are in fact
lighter because the hair starts to thin out there.
Besides those, the background is sloppy.
There are your three points to work on, and they should be explained enough for you (and others) to understand.
Please go ahead, Lordnincompoop, shatter my hopes and dreams 
Alright, I'll make this one blunter for you, but please, don't be discouraged.
Here are some of mine pictures. The first one is from umm... three years ago. Drawn with charcoal and a reference for art class. It was rather brilliant and both the teacher and my classmates were impressed.
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No, it isn't. Classmates are terrible judges of taste (unless you're in art school funded entirely by scholarships), and your teacher was secretly underwhelmed.
Rembrandt was brilliant.
Frida Kahlo was brilliant (and completely self-taught).
Renoir was brilliant.
Caspar Friedrich was brilliant. Hell, even
Adolf Hitler was pretty fucking great.
Michaelangelo (who is also brilliant) painted this at age 16. You are now 18; compare and contrast.
You are not brilliant. To be
brilliant, to be
amazing, is to be at their level. You are not even very good. You are half-decent, perhaps passable, and that is that.
Don't mistake this for arrogance. I am a terrible artist, I pale in the presence of any professional, and many artists in this forum dwarf my abilities (I'm not even commission-worthy, unlike Fault
(though that's got to do with some other issues too); I'd get laughed at if I tried). I have to cope with that fact every time I do "art".
Learn to be humble. See your art, and who you are, as it truly is, instead of through rose-tinted glasses. And once you see this, you'll want to improve even more.
By the way, I want you to take all of your tortillons (that's those little paper rolls you rub all over your drawing to fuck it up and very occassionally "smooth out") and burn them. If you used your fingers, I want you to slice them off with a rusty pair of scissors and use your asscheeks for drawing from here on out.But now, I see that I made quite a mistake. All the things I found difficult to draw I just hid behind the hair - ears, face proportions, most part of the nose, even the mouth behind the hands... Without drawing things I don't like to draw I'll never improve.
You have taken your first steps toward a good ethic. You must face your problems instead of avoiding them; this goes for any pursuit you undertake, and for life in general.
The second one is just a sketch of a female figure. I'm pleased with the body and clothes, but I messed up the face badly. The model had a mean, bitchy expression so I tried to make it more innocent and messed things up.
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Stop. Drop that stylus immediately. Trash the tablet. It's good of you to use models, but you are learning two very bad habits for you at this stage:
- Sitting in front of the computer instead of out in the world, where real art and the best learning is done.
- Using unnecessary tools.
Leave digital art behind, get a sketchbook and a 2B, 4B and 6B pencil, exit your apartment/house, and start sketching everything you see. I mean everything. You need to get to the basics first.
What you need to learn:
- Shading. Do some of these, then start drawing from life.
- Stop drawing symbols. This was described earlier in the thread. Go find it.
I drew another spaceship for a little game mod I am working on:
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I agree with the monkey that it looks more like a building than it does a spaceship.
Spaceships may not need aerodynamics, but it's a good design aesthetic to make things than move often (such as spaceships) look like they move often (i.e. sleek).
That's a spaceship? Hmm. I like how the design appears to be completely unaerodynamic. It looks more like a birds eye view of a building then the traditional Seaship or plane shape that's more common but that's good since if a spaceship was built in zero-g and was never intended to go into areas affected by gravity it wouldn't need to be aerodynamic or anything. (like if it was built in a orbiting shipyard/spacestation.)
Aerodynamics requires air to be present to be applicable. There is no air in a vacuum. Space is a vacuum.
Thus, there are no aerodynamics in space. And because there are no aerodynamics in space, there is no need for ships to be aerodynamic.