Re: Osaka's art (3d&2d)
Looks good as far as style goes, but....
Criticism ahead concerning the pose. If you're satisfied with how it is, don't read : )
The last view looks uncomfortable, like the pilot would be prone to sliding around. It's hard to explain, but I'll try.
From that last picture, it looks like the pilot is holding herself up by her elbows, leaving her feet to dangle. If that isn't the case, she isn't seated, so the main support isn't behind her. Her toes are turned down and her knees are bent at an angle that would be difficult to hold weight with and puts her center of mass too far forward. Any weight put on the knees would be transferred to the heels and then down to the toes which aren't the best things to provide support. Seems like it would cause strain to someone's posture and make them feel like they were falling forward.
Unless she's in space, gravity needs to be taken into account.
I hope this helps.