Wrongly snapped objects, some are snapped on yellow tick instead of white or red tick with no reason.
Overmapped in some parts, like why put streams here when the song itself doesn't support it?
Undermapped some parts too, e.g. you leave some parts blank when the song still supports noticeable rhythm.
Lack of consistency and aesthetic makes this map unintuitive and messy.
Overall, I think you should move on and map other one, that's the only way of improvement. Other suggestions would be taking a look at pishifat's videos, especiall his playlist about mapping basis.