I believe I made a simular tileset with the Net Tiles once before, but it was alternate bonus graphics, and didn't look like nets at all. Brilliant idea though. A little suggestion I can give is the ground palette should be a little brighter.
Are you an ASM coder
and want to trade "resources"? Private Message
me for details.
(I also offer SMW Custom Songs in exchange for ASM! I don't do ports though unless it's to remix.)
Want progress on 100 Rooms of Enemies: The Nightmare Edition? Go here
Are you a sample porter
and wanna help with 100 Rooms of Enemies: The Nightmare Edition
? Private Message me
for details. Expect trading "resources" in exchange. 4 more left.