A few years ago, my job required me to crawl around under desks to run cabling and wiring for office cubicles. I usually kept my phone in my back pocket, but far too often it would slide out of my pocket as I was "crab crawling" on my back. I tried the standard belt holsters, but found that I'd regularly knock into things with it, and when crawling around it got in my way if I had to roll to my side. I kept thinking that it'd be great if my phone was in a holster right over my belt buckle. It'd be easily accessible almost all the time, even when driving down the road with my seatbelt fastened, but alas, I was unable to find such a product to purchase. After YEARS of thinking about this, I finally decided to try making one.
Step 1: Case construction
This is really my first attempt at anything 'leather craft'. I found this video, which is the process I used, although his final product looks much more professional than mine. This guy has a bunch of good leather craft videos on his YouTube channel.