I didn't sand it or anything, and I swapped the DVD bezel for another one I had that was stock since it looked better than my attempt at the painted one in the image below.

Here is a better view of the top


If you're wondering what the black box behind the Xbox is... I made my own component cable for the system a while back as well.
I also painted an S controller to match it



I am currently looking for another Xbox to paint and softmod too so there might be another project thread at some point.