make the text match the avy (Caps on LAMA w/ triple strips below) I'd maybe consider changing the yellow just a smidge. Pic the lighter colors in the lama's fur and Change the text to that color. Finally, put a 1 pixel border around it and then I'd really like it. Just my opinion is all.
It looks good and I really like the background. It's just that the foreground images look like they're just cut and pasted on and don't go well with the yellow/green background that you've chosen, also the text doesn't meld with the entire sig.