Newbie digitizer needs help!

Good morning!

I am a newbie digitizer and I have a very large project - embroidering a logo on 420 shirts for my employer! These shirts were originally purchased from an online company. I have digitized the design myself, however, in the front of the design in a double-embroidered "M", meaning, the "M" is embroidered in one color, then embroidered again by another color, but skewed - so it has a shadow effect. The original "M" looks clean, sharp edges, flat, etc. However, my "M" looks clumbsy, bulky, sloppy, etc. Would anyone be able to help me and tell me where I'm going wrong?

Thanks so much!