This is a bezel for a Ford Focus Shifter. I am not a professional designer and do not have any fancy software. I simply took a picture of the shifter knob from above, traced the shape in Sketchup, and then created the rest of the shape by hand. It fits really well and will need some double-sided tape to be held in place. I measured everything and used a ruler in my original picture to get the scale correct, but upon printing it, it came out too large. I am using Cura to print it and set the X and Y axes at 97%, and the Z axis at 100%. For me, it is tight enough to be held on without any adhesive. You may want to increase the scale if you are planning on painting it. I printed this model with PETG to avoid any warping with heat in the summer.

EDIT: I added another file with the front right corner reworked. After staring at the pictures long enough, it started to bug me. I like it a lot better now. Scaling and everything will still need to be applied when slicing this model.