No problem and indeed best to try yourself
It also gives you more ways to learn it. As advice take a look at what is established. I would suggest taking a look at Galen82 or Madeinjapan's material as well as mine (check the favourites I have in the Chronicles of Man map) for inspiration. Make a sketch or a doodle and when you feel like it works use photoshop or illustrator
If you want I could take a look at the sketch and help you out