That Amy pixel is super good! My only CC is that the lines could be cleaner? The actual shading style works perfectly for pixeling anime. Well done! Kudos.
Self portrait doll looks very cute - I love the skirt! CC is that the little pink cardigan thing is pillow-shaded, but I know how hard it would be to not make that small and short-sleeved look that way. Keep it up. ^_^