Gin's left eye (his, for u it's right) is a little too long, as its almost touches his ear... top of his head could be more oval... and I dunno if Kubo is making such stong necks
Aizen has jaw too much pointy... u should pull it back a little...
Thousen... he's the hardest I think... his nose should be maybe less pointy and more wider and his neck looks like he'd be fat or sick on a illness that I don't know the name in english
and Aizen&Thousen's glasses could be more messure looking...
at least that's my opinion, hope it can help u and won't get u down
Bleach... yes... bleach... i-chi-go! >< yesh
It's wonderful, but would make it even better would be more color! It looks unfinished. Coloring them in would make it look 10x better. Make them pop out rather than receed. Awsome job!
I like this piece much more than the coloured one as I find the contrast between the coloured background and the uncoloured characters pretty interesting. Proportions and neatness can be improved tho'. One step at a time
You're so smart - 'cause you're doin' this thru self-learning
I didn't even know what's GIMP >.<