1. As we have discussed before many times with every organizing project, DECLUTTER first. The old purse from 2001, the bell bottom jeans, the top that is way too small...all go! Anything that does not give you great pleasure or serve a purpose goes! It may go to Goodwill, your daughter or the trashcan, but it DOESN'T stay in your home! Be sure to take every item out, so it is empty and you can evaluate what you have to work with.
2. Remember you want those items used most frequently to be the easiest accessible. Don't put your 3 long gowns that you might wear every 2 years in front and center of the rod. Put them in the very back, freeing up the best place for those items you wear most.
3. Group like items together. I have all my tops together, then all the short sleeve together within that group and then by color within that section. I like my slacks front and center since I rarely wear my dresses or skirts. Think about what you wear most before putting things back in. Do the same with your shoes.
4. Remember that shelves are normally adjustable. Don't assume you need to use them where they are currently located. It might be better suited for your use to move them up or down, creating different sized spaces.
5. I like having matching hangers. BUT, wait to buy those until you see what kind of quantity you will need. No sense buying 400 if you only need 75!
It really feels great opening up the closet door each day to see only those items you would actually use rather than the cluttered mess of last week! Get started!