I'm happy to share one of my first 3D model, inspired by the beautiful form of the Glorious Model O mouse, as a beginner in 3D modeling. Another fantastic designer, which you can check out here, was a source of idea for this model of mine. I used 0.2 layer height, 15% infill, and no support or raft when I 3D printed it, but could adjust these to meet your needs.