Nice to see some small sprites from SplatPixel, i only remeber seeing large pieces.
Anyway, the large guy looks great, no crits there.
When the little guy is extending his arm it looks very odd. I know its a style choice but i dont think it works on his arm. It looks blocky and is distracting.
Some more contrast on the little guys clothes and some more interesting colours and it would be even better!
The black outlines look fine on this sprite, no need to change them in my opinion.