Simple Wall Shelf with double storage space

This easy-to-use and simple shelf system lets you store multiple models or other things nicely on the wall and provides 1 extra space to place smaller objects right under the main shelf! 

For securing the planks in the brackets, I used some double-sided tape, so the planks look nice without using screws.

There are 3 versions: 4mm, 6mm and 8mm holes for the screws.