Smoking paper holder box

This is my first designed object so its not perfect, i will update it in near future, but right now is usable. Just want to give back a bit to the 3d community.
Smoking paper holder, inspired by tissue bar holders, the pieces fit together withouth any external clip, holes are under to reduce plastic, it uses a pen spring of around 2cm long and 25mm wide.
Fits mid sized paper (8cm x 4,4 cm), OCB, rizzla or smoking paper(500 or 300 paper packs), when i got time i will upload also designs for sho