Patches that are clean are usually done with Merrow sewing machine.I have a few Melco Bravo machines and my patches generally come out looking like this: https://imgur.com/a/nstlk
Is there any way to get the edges more refined and look sharper?
Was hoping to go for something along the lines of this:
e: not sure why the tags aren't working..
This video shows Merrow stitching. It looks like a serger. If you have a serger try it. Trim the patch and adjust the stitch density so that it looks like satin stitch.
You can clean yours with burning tool. Watch this video Colman method.
Here is another video by Gunold. Actually this one is pretty slick.