oh god, helpful people, now i have to actually improve it. thanks for the tips.

Some pointers:

If you want to fully chart a song, go ahead and put the chart on Expert rather than Rookie. It can cause confusion when someone is expecting a reduced chart, only to have it (mostly) fully charted. It's not the hardest song ever, but it's still something to consider.

The intro riff/synth has no sustains charted at all, though there should be some; maybe also make them chords, since they sound like. A lot of riffs here also seem to be inaccurately charted. Keep in mind when making these custom tracks not only how notes next to eachother sound, in terms of pitch, but how notes align in a riff. There's also a few instances where you have the rhythm charted, when it'd sort of make more sense to chart the lead, though this is more a matter of personal taste.

There's promise here, and it's still a fun song. Good luck with any future customs!