Happy to help! I did this for the first time in 1995 with a personal shopper, so I know how intimidating it can be. The fun part was going shopping with her the next day to do the fill ins and make new outfits. For instance, she made me get rid of my paper bag pants haha, but the jacket that went with them was still perfectly fine, and she paired it with my jeans and a white little t-shirt. When I asked her how I was going to remember all the new outfits she arranged for me, she pulled out the index cards and a little box. It was so easy to find things to wear because everything was right there in front of me in the box: casual, business casual, dressy, etc. You can even put together your accessories with your outfits.
I don’t use a box any more, but I still keep my closet neat and color coordinated. Oh, one other thing about that. Here’s an example out of my closet. I begin with white camisoles and then next to them are white sleeveless, then white short sleeve, then white long sleeve. Then comes cream the same way. Anyway, good luck, and I’d love to see the finished closet :)