I made a few small tweaks because when I calibrated the images, the CAD software suggested that your images weren't each in scale with each other other. In particular, the 0.5" measurement appears to be nearly twice as tall as it should be if that sketch is calibrated for the 1.5" length you gave in the other image.
Anyway, I hope you don't mind, but I combined your drawings with some observations from the images themselves, keeping them within the constraints of the footprint dimensions you gave.
There also appears to have been a machining error on one of the short edges of the chamfer. I chose to follow your example from your drawings and idealize that in our model (always the best approach, in my opinion, when trying to replicate a prop that was supposed to be a piece of tech—rather, than say, an organic sculpture).
How does this look?