Yes, sometimes I think that, too. A long-long time ago, when, obviously, my poor drawing skills were even poorer, when I worked hard on something, I liked it by the end and posted it. Looking back now, of course it's like, awful, but my views have changed since then. It's just that at that time, working to reach my greatest potential was less than now. Now I feel like it has to be super perfect or I don't like it. Which is, bad, because I like drawing because it's fun, not because I want to be the next Leonardo DaVinci.
Don't be afraid to post your art, people might be even able to give you constructive criticism. And even so, if you had fun drawing it, put your heart into it, that comes through, believe me.