Hey guys i need help with my sig picture, I can see everyone else sig looks pretty cool but i have no clue how to make one, I got a picture on mine but its small and have no clue how to change the size. thanks for any help

 

no one know how to do this

 

I requested to have one made on gmfullsize.com. That's why my username doesn't match up but oh well. I'd help out if I could.