A lot of deviantart users use PaintTool Sai. It's like Photoshop but way easier to learn and use. Results vary on skills. You might like to hear that it is much cheaper (well, depends on your means of acquiring software hehe) and that it works great with Wacom tablets.
Try not to get discouraged if your first drawings aren't "good", it's about being passionate! Like showing drawings to your teacher in first grade!
It will be alright as long as it does not offend anybody or is not really creepy (actually those are very popular..so uh..I'll explain later).