[Gimp-user] Smooth/Blend Edges to second layer and adjust hue/contrast

[Kshlomo <forums gimpusers com>]

I'm layering several pictures, but I can figure out how to blend the edges of
the 2nd and 3rd layers to smooth into the 1st.
As well, I know how to adjust hue/contrast, but I want to specifically adjust
the 2nd and 3rd layers to that of the first.
How do I accomplish such?

Attachments:
* http://www.gimpusers.com/system/attachments/470/original/secondattemp.png

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Kshlomo (via www.gimpusers.com/forums)