Transparent?

Something random that I drew a while I ago in SAI.
This is a very old character of mine,and I tried very hard to make the background transparent,something that i cant seem to figure out in SAI.Because I hate backgrounds,figuring out how to do transparent background will save me a lot of trouble.I was also trying out a new way of shading.

Edit: Appearently,I'm not getting a transparent background,because the settings of the .PNG file aren't correct,and SAI won't let me change them,because I may not have the full version.

EDIT EDIT EDIT
I'm actually going to make it transparent now.Because I found Gimp.
Shoot me.