Batman symbol fidget spinner V1

I designed this for practising my modeling skills in onshape.
I don't own a 3D printer (yet) so I sadly can't give you any advice on things like infill,
support etc.
I designed this for a 22x7 mm bearing with 2x 13 mm nuts (from flat side to flat side).
If you have any tips on how I could improve this design or my modeling skills in general I would love to hear them :)
*i made and updated version of this model with less sharp edges and holes for bigger nuts https://www.thingiverse.com/th