if you wanna post you drawing, then you change you mind after look at others artwork..and you decide not to post it and think that the other drawing way much better than yours...well there is something that you need to know
1) we all in different level..maybe some of them already start 5 years before you..They have passed your level somewhere in past too. So if you want to improve your skill fast, Post your drawing here and look what others say about it
2) some of the drawing might look really nice..thats because they using Photoshop or SAI to make lineart or color it...so dont ever compare your drawing with them..you can do it to if you know how to use it ^^
3)Dont compare you drawing with others. Each person have their own Unique style. You just need to Get Used to your style and improve it ^^
4) It hard to detect our own mistake...soo the only way to know our mistake is by share it with others, if not..you wont improve yourself and remain at the same level...you dont wanna that happen didnt you ??
you might have bad experience in other place..but not in here. This is the place where people share and learn together ^^ so just post it and see what others say about it