What if they laugh at me?

Well, what if they do? Who are they anyway? Your friends? If they are your friends, then they won't laugh! They'll be happy that you are trying something. If they do laugh, were they really your friends? Do you really want them to be?
Your success, in large part, depends on the 5 people you spend the most time with. It's not entirely clear how the internet has changed this, but it has affected it.
Still, those people you are worrying about? What have they got to laugh at anyway?

Don't worry so much about those people. Get back to building your dreams.