I am using the select sky mask. Then using a duplicate of this and inverting it to select everything instead of the sky - called mask 2.
What I now what to do is use a brush mask of water already created to cut into this to create a new mask that is everything except sky and water. (rather like it is possible to do in Illustrator)
Is it possible? or do I have to subtract from the mask and manually mask it with the brush?
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