Those flush scissors look awesome.  I got frustrated and just ended up eyeballing it.  Came out OK - can't tell unless you really look for it.  I mean, I probably made a 90.5 degree cut across 3/4" so it's negligible.
After priming and sanding down to 400 grit, I put the vinyl on with help from the wifey.  First thing I did was take a sharpie around the edges of the panel just in case the t-molding didn't cover everything.

Next, I lined up the vinyl and clamped it in place and then cut it down with my razor so that it hangs over the edge only by a couple of inches.  I wasn't really precise here but I wanted to make the vinyl easier to work with.

Then using a squeegee and the wife's extra arms, I managed to get the vinyl stuck down.  I wish I could have gotten some "in action" shots but I just wanted to get it done.  
No magic here - I did the bottom 1/2 of the panel first and once that was stuck down I peeled the backing paper from the middle out to the other end using the squeegee to remove air bubbles and stick it down.  I am kind of impressed with the vinyl.  It was cheap as hell but seems fairly durable.  It even has a slight texture.  I'd use it again.

Then came the nerve-wracking part - trimming the excess.  I used a brand new razor and just went around the edge keeping the blade at a slight angle but almost flat against the edge.  To get this right, you can't take your time so I just made a continuous cut only slowing to go around the corners.  It worked but I could have easily screwed this up.

Finally, I installed the t-molding.  This went pretty quick and since I've done this a bunch of times I wasn't that worried about it.
 
  
I really like the way this is coming out.  It has that "1970s/Atari" feel to it, which is exactly what I am going for.  Tomorrow I will do the other side. 
