Sure. This is original picture for car:
http://img141.imageshack.us/img141/3...8186292692.jpg

But i have lost the girl, i guess i was editing it on the original pic.

the car one looks cool ^_^

You could Add a overlay text with some grunge over the top (but lightly) parallel with the Side or doors of the car. That would look cool.

Maybe make the m in the first sig brighter, to me I can't see it fully so it looks like an n. (is that you say that? n isn't a vowel lol it sounds better that way)

Where is the girl supposed to be? Looks like one of those trap places in saw or something. Lulz.
Likey the sigs tho.

The car is a simply c/p
you should do more things, add c4d etc

i would say not but or perfect