Seems like a good start. If you are really trying to see how it all works, I would consider updating how your itch page looks (thumbnails etc.) Even though the jam entry time has ended, you can still update your page after submission.
Thanks for the feedback! Actually, I have almost 1 year of experience in game dev, but the reason why my game is so poor in quality is that I didn't try to actually make a game, I only wanted to see how publishing works, but I totally understand your feedback :]
