First one has a boring a LQ render, colors don't blend, font is bad, text isn't readable ( and I have 20/20 vision), the C4Ds behind the render look a bit odd, and there is an apparent lack of depth. Lacks lighting. And the mushroom hat's color is ugly. The good: Good C4D use on the left, you're on the right track for text, and there's an obvious color scheme, which I can say is more than some people achieve. Suggestions: Add some depth, pull a couple of gradient maps, move the text out a bit and change the font, find a higher quality render, duplicate the C4D on the right so it fills up the entire area, and do something to the area behind him. Add lighting. Sig 2: Over sharpened, too much glow, no blending, too foggy, bad text, and the smudging is a bit wonky. Colors are not bayud. Lacks lighting. The good: Nice stock, C4Ds have good potential, and again, text is on the right track. Good red to grey gradient. Suggestions: Remove the smudging, or put the layer mode to soft light/overlay, make the C4D blend with Altair more by duplicating it and setting it to soft/hard light, while erasing over the focal. Add some depth, and make the text more noticeable/change the font. Add lighting. Good luck!