Editing artwork
(WIP)
Krita is my preferred tool of choice here (its free and easy to use)
Cutting
Use the Polygonal Selection Tool with anti-aliasing enabled.
Select the bird or the excess. Invert the selection if necessary, then delete the background.
Halo
Use Image > Flatten Image first.
- Set the foreground colour to
#F0ECE5. - Use Select > Select Opaque.
- Use Select > Grow Selection... with a radius of about 18 px, depending on the image size.
- Use Layer > New > Paint Layer, then drag the layer below the bird.
- Use Edit > Fill with Foreground Color.
- Use Select > Deselect, then Image > Flatten Image.
- Export as PNG and tick Store alpha channel.