Pen Organizer

My first CAD project ever, just a basic desk organizer meant for holding pens. I have yet to print it myself, however I measured the openings to fit even a very large fountain pen, accommodates just about any pen without letting them fall too far over. The height of the larger section is 80mm, and the front goes down to 70mm, I might make another design with another slot near the bottom if the model works well enough. Feedback greatly appreciated!