she probably did the same thing i used to. you have to upload on a website (imageshack is where i did mine) and then get a code link for that picture and then go to edit sig and put that link in your sig and it will be bigger
Were did you upload it on ? on ngu or photobucket or tinypic ? if on photobucket you can chance the size on there . and also you chance size on photoshop
you smart ass lol jk i havent use photobucket in soooo long