Would you mind to provide your .blend file so that I’ll take a look at it?
If you can, just don’t forget to pack all of your resources into your .blend file, to do so, go to File → External Data → Pack All Into .blend, or just check the box “Automatically Pack Into .blend” in that same tab, in order to tell Blender to save all the assets into your .blend file automatically.
Most likely, there’s something wrong with your UV unwrapping.
First of all: you are using a mix shader to mix your previous shader… with color…
So you might want to mix the lace and the stocking image with a mix node and use it as the base color and also maybe mix the opacity map with the stocking image to make up a new alpha… and adjust the the mix factors to you liking…
It is going to depend on what your Net texture looks like to set things up correctly,
Here is one example that gets the fishnet Black and adds a black seam along one edge …
You’ll get there! It just takes time and practice…watch all the videos you can on materials and eventually, you will have a good understanding of how to Plug Stuff in… I still might have an idea and I just start grabbing nodes just to see what it would get me as close to the idea as the nodes will alow!