well i'm just going to reupload them with a white border.

Bring the white BG back, the people who told you to remove it obviously didn't see the AA on the outline, the BG should be transparent if it serves no purpose, but in these pieces they actually do serve a purpose. You can change themes on this website, and with I'm viewing it with a dark BG and it looks very strange with the white AA.

Great work nonetheless :D

One of my faviorite styles, simple and effective. Shows you can make something with nothing (well a few colours :P)

I'd definatel make the Background transparent, in the rules of Pixeljoint it even says to make them transparent if they have no purpose.

it's me, or that leg in the back is a bit out of place? also, that white background is unnecesary.

nice job, flareon is my favorite of the seven eevee's