I had plan to DIY my own LED light. Before, I could not find any useful information on LED DIY so I dare not try. Later on I found a video explaining very detail and precise information on how to DIY. To a noob like me, the video was very well made and well explained. He even teach you how to solder.
This is the video
There are 3 or 4 parts. After watching I think I can attempt to try. I am not logging my progress here. Just sharing the info. Like many useful info I got from this forum, hopefully someone will find it useful.