Music Video

I made this video: https://www.youtube.com/watch?v=nDVzZaFgoT8

Images are not mine but I wrote and recorded the music with my piano.

I would like to have some prompts: how can I improve record and sound quality?

1) do i have to change piano?

2) do i have to play better my piano?

3) do i have to change room?

4) do i have to change microphones position?

5) do i have to change type of phones? (i used a shure sm57 and a rode nt1)

6) do i have to change the effects and the post editing or mixing?

as you see I have many questions not answered in my mind 🙂

thank you very much