First Sig

first Sig i Made been trying to get one done...so finally i got it done =D

http://sadpanda.us/images/502182-B5IFWJF.png

Not bad for a first one....
you placed a c4d over render...made the whole thing too bright...try erasing parts of it from the render. Bottom left corner is too empty(negative)...compared to the other sides....place a text there is a hella rippers(yes even in this forum). Add some gradient maps, also try sharpening it and see how it looks :)...kiu dude.

KroniiK Pretty much summed this up.

Your C4D over the render looks like it's be set on screen or lighten, which is why it kind of washed out the render. You could try erasing some of the white parts with nothing on it like KroniiK said or you could try setting it to Color Dodge or Linear dodge. Doing the second would probably change your color of the C4D but this can be changed with Hue/Saturation. And try adding a light source.

Either way, it's nice for a first and with some adjustments this could turn out pretty awesome. kiu.

Thxs for The Tips and Suggestions really helps Out