How to blend image in to background color

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(11-06-2019, 08:31 PM)Blighty Wrote: You need to use a Layer Mask. There is a tutorial here:
https://www.gimp.org/tutorials/Layer_Masks/

1. (Optional) Add a white background layer and move it below the arm layer.

2. On the arm layer, right click and select Add Layer Mask. Use "White (full opacity)"

3. In the layers dialogue, click on the the layer mask to make it active.

4. Create a white to black gradient where you want the transition to be.

In the attached xcf, right click on the layer mask and select "Show Layer Mask" to see the layer mask. Repeat to de-select Show Layer Mask.

Thanks!