Welcome, Tomcat. Do not worry - your English is far better than my thirty-year-stale college French :-). You are perfectly understandable, and the Guild is probably interested more in your graphics than your grammar. Does French also have the saying "a picture is worth a thousand words"?
If you are shy about your cartography it is fine to just lurk and learn, but you will probably learn quicker if you post about a map as you go - what we call a work-in-progress thread. Whether you follow a tutorial or choose your owm methods, you will find plenty of advice and help offered.
Do you already have abilities with any graphics software? Pretty much any such applicatikon can be used for some sort of mapping, though if you have certain styles in mind, certain tools may work better. Have you seen styles here that you want to try?