Alright, so I've been observing your recent work and I have some feedback to provide.
Despite the fact that creating icons for custom models that lack icons is very useful and, honestly, is done in the best way that I've seen for awhile, I have some critique.
Your icons do have a pretty pixelized look, and therefore, lower quality when standing next to other icons. Unfortunately, even though I like your style and like what you are doing, I (personally) probably wouldn't use most of your icons because of how it would look next to others, in a Tavern for example. I will post a picture showcasing how a Tavern would look if it has some custom icons, some default icons and some of yours:
Notice how the pixelized look makes your icons stand out a little bit, as if they belong less in there. Perhaps Gelbin Mekkatorque is the one that suffers least from that issue.
In general, I really like what you are doing and how you are doing it. I just think it requires some improvements quality-wise and then your work would be just perfect to me.
Good luck!