1. Backup and remove your Interface and WTF folders
2. Transfer in Bbasher's UI Interface, and WTF folders
3. Rename the WTF\Account\YOUR ACCOUNT NAME folder
4. Change folder above to your account name as it is shown in your old WTF folder if you can't remember
I'd like to give Acrylic from Vodka on Alterac Mountains credit for the basic layout of this UI set up as his was the one who inspired me to make this Interface.
I had gone away from my UI here and starting using a mix between ElvUI and a few other addon's but I decided to give my UI a go again because I know I use to like it and was very successful with it so I will be updating this when I get a chance in the next couple weeks. Stay tuned for the updated version.