I have ordered from AkiAsahi many times and he provides a great service. Since his workshop is located only a couple of kilometers distance from where I live, he usually drops the covering just into my mailbox. I also ordered from hugostudio, and cameraleather. In all cases the provided coverings had a very good fit.
The trick to apply the new covering is to "soften" the adhesive by applying some hand sanitizer gel that contains isopropyl alcohol. Doing so, the adhesive is hardly sticky until the isopropyl alcohol has evaporated and gives you enough time to precisely adjust the new covering, fitting it to screw holes, levers, etc. The isopropyl alcohol will slowly evaporate after the covering has been applied to the camera so you need to wait about 12 hours or so and then can use the camera.