Desk Organizer

This is my attempt and improvement of one from Amazon. The front hole has a curved bottom to make it easier to get paper clips out. The Amazon version is here:

https://www.amazon.com/dp/B00INC21EA/_encoding=UTF8?coliid=I226S4TZ89D85K&colid=1UOE59UVJME0J&psc=0

I made this with TinkerCAD and there are a couple artifacts where the paperclip hole joins with the pen hole. Any assistance with making that better would be appreciated.