I think it went well..
Step 1: The parts
a PVC pipe, a pipe holder, a p4 heat sink and an old 24volt fan.
I suppose that connecting the led to the driver and mounting it on the heat sink with the optics is self explanatory so the photographs are enough.
Step 2: Test fitting
Step 3: The holder
I also made an L shaped bar to mount on the wall. Test fit everything using a rod passing through the pipe with a couple of spacers.
Step 4: Tidying and painting
Then for some painting.Primer first and then black paint.