My honest feedback on your montage :
Overall a pretty good montage (very good considering its your first)
Editing, thumbnail and background music could be better
Also if u wanna make it big on YouTube I recommend buying some skins coz skins make any montage better and more fun to watch
And lastly, don't name your video "TenZ sens boosted my aim" coz that's pretty stupid. Simply using a top pro's sense doesn't magically make u better.
That's all. Good luck for your future videos.