Porting is one thing. But I've been messing around making custom levels, and I think I've gotten the hang of it. And due to the fact that there are no sprites for BluePrint or R-2, that means I get to be creative with them. As mentioned on Discord, for example, instead of R-2 being depicted as a garden of sorts, I view it as a ruined castle or fortress with rainbow water leaking through the seams and cracks. As for BluePrint, just imagine Sonic & Ashuro's tutorial level, but less likely to crash, and with some different art.