I've been using gel pens as an art medium for years and cannot stop using them! My favorite pens are usually neon colors to make psychedelic art but I am starting to dabble with other color pens. I started out just doodling with them and once I started I couldn't stop.
My art really started to take shape when I became ill many years ago and didn't have much strength to leave my own bed. Doing art was the only thing my strength could muster and it became the world that allowed me to express myself. Remember to never give up!
More info: nicodauk.deviantart.com