/diy/ - Do It Yourself

I got a new Prusa i3 MK3 and I'm doing some tests to see if it's calibrated right, total noob in 3d printing.
I tried this: https://www.thingiverse.com/thing:937740

And this is the result:
https://imgur.com/a/oRLuKTV

It ended up not so well, I got some gaps and in some areas it doesn't seem good.
I used the suggested settings (10% infill, 0.2mm layer height) and Prusa Control as a slicer since I am still a noob with slicing.

Any tips to improve the print quality and to avoid these gaps?