this may be a duplicate question but I can't fix this problem with the solutions I've found.
I have three images in InDesign:
- Background 1
- Background 2
- Mask Image (complex silhouette of a forest)
I want to keep Background 1 as the main background, and clip Background 2 into the shape of the Mask Image. I've removed the (previously white) background of the Mask Image in Photoshop to create an entirely transparent background, and added an alpha channel.
So, it should be a case of Ctrl-X on Background 2, then select the Mask Image and Paste Into.
Except... this doesn't work. Background 2 does indeed go into the Mask Image's frame, but it doesn't take the shape of the trees. Does anyone know what I'm doing wrong?