Alright so how about this plan.
For the spell lets ask that Pip teaches us how to create a flame, theoretically it should use threads we haven't yet touched upon. Aside from that we should ask him to teach us, or at least show us how he stored threads into the pebbles so we can copy that latter. Next, we should continue taking sword lessons from Aethelwine, we're not sure yet if magic can be stopped or prevented so having a more mundane method of protection will come in handy and being physically fit is always an upside. Finally, we should start connecting forming lattices and anchors to hand motions. I propose slicing to the left diagonally for creating lattices, and slicing to the right diagonally for anchors then we can combine both of those and then push in a direction to connect Mage Hand to hand motions.
I suggest connecting what we know to hand motions so that we can start to learn to possibly form simpler aspects, or spells without having to waste our witchsight on it to further drain our mental strength.
On the subject of practicing I vote we spend spare time before sleeping every day to storing mana into pebbles, and trying to make our witchsight more efficient through continuous use.