There is the odor of a real release soon....
Splash. Mr. O.R.I.G.I.N.A.L will be making the real one. I strongly suggest that you just stick with the one they give you.
However, I made some and put them online and you can use them as well.
better GIMP how tos
The information I write here is often laced with self doubt, thinly disguised insults and an occasional flirt with people I have either met or imagined.
Better documentation about all of this can be found at docs.gimp.org.