First, step away from the Dremel, and no one gets hurt.
The only use I have for a Dremel with a gun is to use a felt polishing bob and some rouge to polish a feed ramp.
There IS a power tool for engravers- called the Gravermeister- but it works quite differently from a Dremel.
I have to ask you a question- can you draw? Engraving is basically drawing- and carving- into metal. I have had the opportunity to observe some very good engravers- including the folks that worked for Mr. Ken Hurst (who has been a guest here). Basically, they are artists.
Would suggest that you get some gravers and some metal plates (copper, mild steel) find a basic design (floral and scroll) transfer the pattern to the metal with ink, and start carving. Do some reading first, and give it a try.
What we have here is... failure- to communicate.