Lighting is disproportional to the render, you're clearly not using any techniques the crowd uses, like the rule of thirds. Bad placement of text, and to add to the fact that your render is too small for the signature size, your color swatches don't make any of the right color choices. Bad use of scan-lines, if you ever use them, put them on a very light opacity and erase a shit-load of it. 3/10. happy?