O.K., I hope this is not overkill, but here are a few holsters I've made over the years. Worst first.

I got carried away with colors, in doing this Mexican style holster for the 1911.
Below is one for my Para Ordnance P10 .45. The little rivet in the corner is a very good idea to keep the stitches from opening up over the years, if you use it a lot.
I originally made this one way back in 1986 for my H&K P7M13. I sign, mark, and date each new holster on the back side. Recently I found it is a perfect fit for my new Walther/S&W PPKS .380. Note the thick leather spacer sewn into the lower seam, to widen it for the P7M13 dimensions. And this is a closed bottom holster, with a bottom piece sewn in, squaring the end.
I originally made this one for the P10, but changed my mind about the design. With a new safety strap, it fits one of my custom made "K" snubbies perfectly. Note the Victory frame lanyard ring...sort of curious on a round butt.
Here's one for my S&W 63. Doing it again, I would use a color other than silver for the scallops around the edge. You learn something with each new holster.
The colors worked out a little bit better on the traditional floral design for this S&W 66 holster...my early one with all stainless rear sight and trigger stop, which I purchased new.
Here's a very long holster for one of my 6" Colt Woodsman's. I also made a quick attach extension hanger, so during severe cold winter weather, I can hang the thing so it is just below the edge of my parka, so I can get at it without half undressing and freezing. I call it my "low draw" rig. I like basket weave; simple, easy to do, and looks good.
I have other holsters for inside the pants, belt clip inside or out, etc. All are unadorned and strictly utilitarian. Tandy Leather sells, or did sell, nice nickel plated flat spring belt clips which you can sew and rivet into the holster, and I've used a few of those.
It's nice to be able to visualize the holster design for a new pistol, and then just start making it...often copying or adapting features you see on some other commercial holster. I take a manila file folder, wrap it loosely around the gun, and begin drawing on the cardboard with a marking pen and then trimming it to shape with a scissors. Pretty soon you have a template for tracing onto leather, cutting...on and on it goes. Good rainy day stuff.