I used DDReam studio to sync this. it basically lets you see the audio waveform underneath the arrows which helps syncing it a lot. However it is a bit wonky to use. Also, there's another step making program called Arrow Vortex which is apparently pretty good but I haven't used it at all yet
+PianoVideosJustForU (PVJFU) It's necessarily not that much harder than oITG's lua format but it can be a bit confusing at first if you're used to the oITG's lua format and have no prior programming experience.
+BrightXeno The Gizoid I don't usually take straight up requests but I guess ideas are welcome though :P I really can't promise much but if I like the song and I feel like it's moddable enough, theh there is a chance I may do it.