Well that would be a duplicate layer effect and some alpha to text with a rainbow gradient. I'll try and get a mini tut up tomorrow.

Try these for starters.
http://translate.google.com/translate?c ... extes.html

The site is originally written in French but this is the English translation.
I love this tutorial site. It's always been one of my favorites.Some of the tutorials are a bit hard to understand, but if you look closely at the images you can get them figured out.
have fun!

On your sample Bonita it looks like it was flipped horizontally and the wind script was applied. It is very pretty.

That's a new one to me Rod. Tons of ideas there.

@ZWard117 - That will be greatly appreciated, thanks.
@Rod - Thank you. I will check it out.
@Molly - Yeah, I just suck without tutorials to help me out the first time.

I swear I have seen that page of text links but in English...I used to have that link on the old pc.

Yes it has been posted here before.
I would love to see all these effects re written for Gimp-2.8.

Very useful, thanks Rod