since you dropped a few bucks on a pantograph, somewhere in the forum basement i think is an article or two on making yer own templates for this machine. by doing your own fonts logos, etc-- you can save a lot of time doing what i call "repeat work. such panto work can stand alone, or can be...
i had an excellent book on heraldry which i gave to an engraver friend. he helped me quite a bit doing hobo work. his name was steve ellsworth. sadly, i don't recall the name/author of the book. you may get lucky on the bay or amazon.
get a copy of a book on heraldry. most books will give a good description of how colors were shown on metal. this information may not easily translate on engravings of the size or scale most of us work with.
the level of self doubt that most artists have can be a killer to a possable lucrative career. look at the quality of your work. compare that to the variety of wok you see here on the forum. if you do this in an objective manner, you'll find your work is perhaps more advanced than those with a...
there's dozens of ways to make yer own. ex. chap stick for your lips. without much tweaking, this will work. if too stiff, add a bit of mineral oil or vegetable oil. bring to a melt, blend, ans you're done. if you make one oz of the stuff it will last a very long time.
sorry for the late reply. i'd gladly send a pic of the beast, but i currently don't know how to do that. i just got a new phone. willo send when i get more knowledge.