Hey guys.

Since my texture folder already reached 3,1GB I was wondering how to get loaded faster.
So, I thought it might be better to put the whole folder in an .esp file like Beth did it with the HighRes Pack.

I don't have a clue how to do that, but I hope to find someone here who know how it works and helps me!
Would be cool to get some help with it

You mean a BSA, not an ESP. Anyway, try this tool: http://skyrim.nexusmods.com/downloads/file.php?id=247