Welcome.
You may want to take a look around, see what's available here or The RPF and also consider some of the larger costume clubs, specifically the Mandalorain Mercs., as I believe they have some information on templates, etc. Most folks associated these sites are pretty straight shooters but there's always a chance you'll run into an issue. Two pieces of advice starting out in the costuming groups; be prepared to do your own leg work on resources and how too's, especially when it comes to the Mandalorian groups. Folks will normally share info., etc. but you'll need to put forth some effort. The second bit is if it sounds too good to be true, it usually is. If you do decide to go the printing route, a lot of the designers can or will break down the STLs for printing on smaller machines if you ask. Good hunting.
