are you thinking about making it from scratch?
It's really hard to sew leather/faux leather, but here's a jacket pattern that might work.
Depends on how much trouble you want to go through, you could even etch the details in...or embroider >.<. I would use 3D fabric paint for a quick and easy solution though
If you don't want to make it from scratch, you could visit some local thrift stores to see if they have any similar jackets that you could modify.