Kirby Basic Sprites

[StarSock64]

These don't look that "bad" per se, but they're missing the point

You'd never see such big, unrefined lines on sprites in an actual kirby game because the sprites are made by carefully placing pixels in a way that gives the artist control of each individual pixel. I mean, you can draw the outline quickly... you don't literally have to go in and place each pixel slowly in each square one by one, but it should usually be done with a 1x pixel brush (aka the pencil tool in MS Paint) and it needs to be refined to the point where each pixel looks intentionally placed where it belongs. In other words, draw the outline and edit it until it looks right.

Your thick outlines form a lot of awkwardness:
the top right portion of the foot closest to us is too angular, the arms are bumpy, kirby's cheek thingies are too thick, the outline around the "sucking" pose is suddenly a lot thinner than the outline in the rest of them, and there's a lot of noise and imperfections in the outlines in general that are making it not look smooth or refined...

Basically the most important thing you need to do right now is to start making sprites with the pencil tool and not with whatever thick brush you've been using. I think someone with more experience could use a thicker brush and make it work, but it's not doing you any favors.