I'd suggest chilling out on the noise and high contrast. That contrast just looks ugly. On the snake tag, obviously the contrast is way too high, but the text is a bit far from the render, a bit too visible (draws attention away from Snake by being so bright), and the green color comes out of nowhere. On the Hulk tag, the contrast is too high, the background is a bit messy though it does have an okay flow, and the text looks a little unnatural. The knight tag is the best, in my opinion, except that the negative space looks very abrupt and unnatural.
i think the knight is thee best of the group as well. ditto about the high contrast. the high saturated colors can draw the eye away from it completely
A bit too bright, i sugest darkening just the edges of the render and a bit of depth on the background. For hulk one.
Knight tag looks really good. Nice colours and good flow. Pretty much agree about the others. Contrast is mainly too high, allthough your latest version of the Hulk tag lacks a bit of it, making it too bright.
knight looks good. just need to find the right balance of brightness/contrast on the others. also colors on the snake one clash.
