Ballception - A Ball Within A Ball

My first ever 100% custom design, built in Tinkercad by simply arranging shapes and removing chunks. It's Ballception! A ball within a ball! Mind = blown, amiright? Don't expect anything special here folks, it's pretty simple and has a few pretty obvious weak points that I may or may not fix. Anyway, I've only ever printed this baby with supports and at 75% scale, it took a bit of trimming but turned out pretty good.