I did mine the entire length of the door, but you could do yours only a few inches in the center if you prefer. (tatertotsandjello.com)
The 23 - karat trim splashes all over the cocaine - white interior, covering the gauge cluster shifter, shifter gate, steering column, trunk and engine release handles, and the full length of the door sills. (automobilemag.com)
Then cut lengths of doors top to fit each box (with mitered corners) and mount with Brad nailer ON TOP of the spacers, just overlapping the pieces added in step 15. (homemadelovely.com)