Sorry, I know that you've posted this comment for one month but whatever, I wanted to say a thing. ;o;
Drawings might not be the most important stuff. I don't know how you draw...But if there are people who think you've got a certain potential, then don't hesitate and just post your comic!
Don't just ask yourself about how good your comic is or how you've done it, people are here to see what you've done and they might criticize a little just to help you.
@vincentprendick have said the most important tips to do for a begginner... Just don't frustated doing your comic, and if you're a very begginer, don't live with your comic......... that would be dangerous for you. 
But still! You can found some lessons about art in Youtube or somewhere else! Be curious and don't stay in your own art style, there are also people on Youtube who criticize arts (like SolarSands) or even try to ask your friends who know you the best. Even if they're not into your hobby, ask them about how you draw, so then they would be honest because they wouldn't already know how you draw tho. 
I hope that my comment have helped you a bit! 