There are two ways to be good at something:

1) Practice like hell, and actually be 'good' at it
2) Rag on anyone else who tries so as to appear 'better' than them somehow

If you're not prepared for the criticism, don't post. I see youtube vids all the time of kids trying to play material far beyond their capability - why not play something simple well?

Or, you find a place like this where far and away the majority of people are suppotive, and will genuinely try to help you... :)