You sent me a PM asking a question about this
So I guess, I will try to answer it right here
BTW, I'm not the best texture modder in the board
You can search basic photoshop tutorial on youtube, there is tons of tutorial there
(it's really impossible for me to teach you all the technique, it would be better if you learned it yourself through youtube)
Regarding your moustache, the easiest way is
-Find a "Transparent/No background moustache" image on google image
-Open the image
-Use the Magic Wand Tool, select the moustache (if you can't select all the moustache image, u can use this method, select the white background first, after that press (ctrl+shift+I key) to inverse select)
-Use the move tool (V key), and drag the selected moustache to your target image (for eg. jimmy hopkins texture)
-Resize your moustache image (ctrl+T key)
-Fit the moustache to the target image
-Done
The same should goes with the other stuff