How am I?
this was a few months ago

I need some tips on how I can improve please.

Your tricks look good. I do not have any suggestions for how you could improve your yo-yoing. Here are my suggestions for making your next video:
Wear a darker shirt or use a different color string because your string is not visible in this video. Also, do your tricks closer to the camera. If you know how, edit out the clips where you get a knot and you aren’t doing any tricks.