Highest quality iron or sew on patches, embroidered and edge secured. Every patch can be ironed on, but if the garment you are customizing will see heavy use we suggest you sew it on.
If you have a closet full of clothes you got for gifts and they just suck, patches are absolutely the best way to give a rag some nasty class!
I have been told that some people actually use patches to cover up holes in their clothing? Whatever, it’s a free world!