If i have an image with a white background as this one

Do i still need to do a render?
And for render is it normal it take me like over a hour to make one i'm starting to rage on my Gimp 2 -.-
Also if i want to put in to get in a sig but i don't want it to be too much large or long how do i do it?
This post was edited by laclac2 on Jun 18 2011 07:09pm