Once it is open, please scroll down until you find the texts 'const float normalmapscale = x' and 'const float normalmaploopnum = x' (Line numbers 33 & 34.) To open up an FX file and edit it, you must have some sort of notepad program. Some of the maps are already fixed to be a specific size, but if it looks strange on your model and/or it's too small to be seen, please open up the 'Material_2.
I will tell you how to edit the dimensions of the texture. The purpose of this post was just to share my collection. If you don't know how to use normal maps or want to know to make them, please just look up someone else's tutorial. I do make these things in like 5 minutes afterall. I was asked to share some of my normal maps so I will do so! Today is my birthday so why not celebrate with some normal maps, eh? If you use you them, credit is appreciated but not needed.