[Gimp-user] Problems creating layer masks

[Derek Salt <dereksalt1159 gmail com>]

I hope that you can help me.  For a long time I have been trying to make
layer masks of fine details, such as leafless trees full of twigs, using
Gimp 2.8.  I can make what looks like a perfect black and white image for
the mask but when I apply it to the photo all the twigs come out with a
white halo around them.  I have tried selecting the image, growing,
shrinking, and feathering it, the copying and pasting but nothing works.
Working on solid areas such as a building gives no problems.



Any suggestions please.


Derek Salt