When it comes to stitching your piece onto your jacket,
there are a couple of things you may want to try. If you
have really thick leather, you could try using leather
needles. These may help go through leather more easily
and leave less obvious penetration marks.
Most of the time though, a regular needle will work.
Stitch around your design as close as possible while
still keeping an even edge all the way around. This will
take some careful maneuvering with the jacket under your
You might want to use a bit longer stitch than usual, so
that the needle perforations in the real leather won't
be too close together and weaken it.