Being a good artist or good designer isn't just knowing how to use the tools you have, although it does help. The greatest artist can work with the most minimal of tools and come up with something of greatness that surpasses those who are still arguing about which paint brush or protractor is superior.
To be a great artist is to be able to understand the relationships and inferences of the lines to circles, squares to triangles, and so on. It is to understand the flow of information and assimilate it into a composition that captures not only it's essence but it's possibilities.
There's been a lot of talk lately about this graphic novel, Maus. Maybe you've heard about it. I bought my first copy of it back in 1991 or something when it was first collected as a graphic novel.
Anyhow, at the time, it was different than other graphic novels because there wasn't much in the way of the way of non-superhero fare (and I read plenty of those). It opened my eyes to the medium and.how stories could be told.