I've started on a patch & like you all have done things. I have done most of them. Seams like it gets a little wonky no matter what we might do. I do have patterns I made from cardboard but don't always use them & just use what ever shape my fabric is & use it. But if my partner wants a special shape then I'll make it. But I kind like it wonky. That's what making the patches by hand is. If we wanted it all straight & accurate we'd sew them on our sewing machines. Embelish just the front with the felt or fleese behind it, then when done put the back on & turn under once or twice it might be a little less wonky. You have to try different ways & find out what each individual likes to make. Mind are wonky sometimes straight & neat. The different fabrics makes a difference too.
This is alittle wonky of one I made.
The is a kit I received.
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