To make my "Photo Collage" I used four pictures of me. I add a mask for the four of them and resize them so they could fit on the letters and I add "Black and White Adjustment".

I add a guitar and replaced it for a letter "O".

I add a texture to my letters so they could look more metallic and made a "Clipping Mask" of my pictures. 

On the Background I made it purple and made a Purple "Inner Shadow" to my main picture so it wouldn't look weird.

With this "Photo Collage" I'm trying to show to people how music is my life.  

(I made a "Logo" too)