About this 3D model

My first 3D project, I wanted a small display shelf for my LEGO Brickheadz collection so I thought it would be a great place to start. May have to scale by 50% for correct sizing, designed in Blender and when I import to Cura I have to do this to get the correct sizing. 3 Sizes Small - 3" x 2.5" Medium - 3" x 6" Large - 3" x 11"