The main difference was that, in the step where one makes the background, I had three layers; one was a rainbow gradient, and the other two were textures.
The border was 1. rainbow gradient 2. layer mask to make the middle transparent 3. 50% transparency on the layer as a whole
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http://www.gimptalk.com/forum/topic/Glass-Ball-Creation-Using-Gimp-20533-1.html
The main difference was that, in the step where one makes the background, I had three layers; one was a rainbow gradient, and the other two were textures.
The border was
1. rainbow gradient
2. layer mask to make the middle transparent
3. 50% transparency on the layer as a whole