I'm seeing a lot of positive effort on this thread.
By the way, because the final tile is going to be a bitmap, you can, in fact, use masked bitmaps as repeating elements.
I already had two bitmaps trimmed, from years ago in Photoshop, but I use Xara practically daily to make refined, accurate image masks. You nudge imported photos exactly as you do vector shapes you draw. Or make a combination of elements.
-g
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