3D Printing: Door Hook I

So some of my friends in Engineering have bought a house 3D printer, and suggested I learn how to make models for printing.
This is my first project, making a door hook (because my new place is woefully lacking in hooks).

I used Onshape to design this, but in the future I'm considering using Blender for designs where specific measurements don't matter so much. For the slicer, I used Bambu Studio, because that's the brand of printer I'm using.

Unfortunately, while this did print perfectly well, it's not very adaptable to different door sizes (it only fits the one I measured it for). So, in the improved version I plan to make the top hook a different size to the bottom so that's its reversible and usable for two different door thicknesses.