[spoiler=Attempt 2]
I've no idea what this is supposed to represent, so maybe it's some alien or something with a strange skeletal structure. I don't know.
But if it's of this earth, then there's a certain skeletal template that animals conform to - when you get as specific as four legged animals, then it gets even more similar. For starters, you've attached those thigh bones straight to the spine. Not only does that look wrong, there isn't really anything out there that has uneven legs. Nor do most land-bound animals have wire-bones like the ones you drew.
Look up the skeletal structure of an animal similar to what you want to draw. Not just to copy off of, but just to have as a reference. If you don't, your work will end up looking clumsy and child-like; not just because of "realism" or "anatomy" or what people tout, but because the concept is flawed/incomplete/incoherent/incohesive.
If you want to get serious about art, you won't progress by drawing things from your head that you think are cool if you're only just starting - that generally ends badly, because people's ideas of things are very vague and expansive. Draw from life until your idea of, say, people improves (and is not just a variation on a stickman).