This will hopefully help someone get their mash-up separated into it's own folder so it can be shared without over-writing other peoples textures and meshes. (Also if you do not want to share your mash-up this guide is nice for re-texturing something and keeping your data folder more organized).
I did not take screen shots of the whole thing, just only a couple to help explain the process. When you are done don't forget to save (I broke my keyboard raging after forgetting to save a more cluttered mash-up lol)! when you want to share it make sure all the textures are correct and what not.
To share; What I do when I share is I just make a meshes and textures folder on my desktop (temporarily) and copy my new meshes and textures folder for my mash-up into them; then I just right click my desktop meshes and textures folder and use 7-zip to add them to an archive. If you share something on a larger site like tesnexus make an esp or you will get harassed to death by people who are to lazy to make one themselves -.-.
Hope this helps, this is probably already know by many, but there are some people who probably don't know.
edit: will come back to edit this later too tired XD.