Abort / Cancel pop up modification
 

I am definitely new to NSIS and SkinBuilder. I am trying to make a skin that has a person sticking out of the side, which I have gotten pretty far with.

My problem is when someone wants to cancel the pop up that comes up looks horrible due to scaling. I am trying to figure out how I can modify the cancel screen. Can I use a different skin for that pop up? If not, where would I modify the size settings for the pop up window?

I have looked all over for an answer and havent found anything yet. If anyone can help I would greatly appreciate it.