First one's render is waaay too dark, and Text goes against the flow, and On the second, I suggest recoloring his eyes to make it match more of a human look. Right now, it looks like he got high out of his mind with that severe of Pink Eye.
Pretty sweet for GIMP. Those are actually up to par with with Photoshop...Maybe a Bogey. Still, they don't look great. Render could use soem work. Pink eye...o_O
That's true. Photoshop is definitely better than Gimp, so grab the free trial and see how you like it. Then you can buy the whole version if you have enough money, buy an older version for much less, or just download Gimp if you're not interested.