@Erich_L Thanks! On iPad I use Procreate and Artstudio Pro.
Procreate is so effortless to draw with so I use it to create the initial art assets - so those workfiles are allowed to be messy

Once an individual asset is completed I paste it to ArtStudio Pro and manually build an atlas image there.
ArtStudio Pro was, in my experience the only iPad software up to the task due to these reasons:
- It automatically trims pasted images, Procreate pastes everything as if it was the size of the whole canvas.
- There is no layer limit.
- The move tool can automatically grab a layer just by touching it's pixels, this speeds up arranging assets quite a bit.

Then the atlas file is finally used in Godot to create individual tile definitions, which are basically just a combination of a Sprite region and a collision shape.
