Congrats on making progress!
Can you post the room size, windows and doors? Is there a separate closet area in the room? If you post a few more pics of the other walls, you will get lots of help.
I suggest ruler folding all fabric so it is all the same width. Easy to store and see the different colors or pieces. Plan the work stations according to how you want to sew. Do you need a large iron station or want a small place to i**ron too?
Do you have multiple machines to set up? What furniture is going back in the room?
If you are buying storage boxes, buy a few extra.
Have fun organizing. It is a favorite task for me.
(ETA: ** added to prevent links to the word. I didn't put any links in the post.)