This badge depicts the 'Wrath of Khan'-era Starfleet Line-rank badges, worn on the right shoulder and left sleeve. You will of course need to source the pins and caps.

If you don't have a 3D printer but you'd really like one of these please send me a DM and we can arrange for me to produce one for you, or check out my Numonday store:

www.numonday.com/shop/enterprise-xd-design