To be honest, everybody can produce pretty graphics, what differs is the time spent on it. A talent in doing graphic, or you can call it the ability to materialize imagination with exceptional motor muscle control will surely help the "talented person to produce something great in short amount of time.
I had a friend who's not at all have the talent as an artist, but he's passionate, so his instructor told him to spent time to replicate a sketch, which he stroke the lines and erase lines repeatedly until he gained a muscle memory and and muscle control. He finally manage to reproduce the sketch like after 20 days, and I can produce the same sketch in just under 2 hour. So talented or not, it depends on training and the time spent, one day anybody will pickup their rock bottom speed of stroking lines and making the "correct" strokes, which means the ability to make arts are acquired.
That friend of mine nowadays, can draw something at similar speed or maybe a bit faster than I am now, given we're sketching the same thing. So, in this world, two types of artist exist, the "talented on" and "the trained" one.
Naji this means you have to be the "trained one". Get a pencil and papers, practice, and after that you can start using pen once you have consistent strokes and good control. No software in the world will help you to acquire that skill, mostly it'll come from effort on doing it real. Cheers!