Just wanted to share my WIP.
The used mapping method was described here:
https://www.vgmaps.com/forums/index.php?topic=1368
Now with the new feature (https://www.vgmaps.com/forums/index.php?topic=540.msg13866#new) of coloring the canvas purple instead of black in Gens Rerecording, I emproved my maps with adding the parallax layer. As the B layer has lots of black & near-black places, purple made it trivial to cut all the empty places out & put the A layer picture instead.
But the placement isn't optimal sometimes.
Sprites will follow later.
First Level.
Second Level and 5-1.
Third Level & Train.
Fifth Level.