Simple modular Desktop Shelf to hold everything

I was in need to reorganize my desk, so i designed this simple modular shelf with 4 pieces in total. dimensions: (minimal) 150Wx150Lx116H mm, (as image) 300Wx300Lx224H minimalistic and functional, later i will add containers to screw on top part. instruction on images. Can be remixed at will. I hope you'll enjoy it.