Everyone makes fun of me when They soon see that I can't say any word with s in it! How do I do it properly?
It's hard to teach you when I'm in front of my computer. Schools have classes that help you with your speech, try one of those and it might work. Or repeat a sentence with the S in it until you get it right.
Your tongue should almost touch the upper side of your mouth. If you stick it out you're doing it wrong.
hiss like a snake, I dont know...
It could be that you have a lisp, personally, I think it's kinda cute :)
practice this; She sells seashells by the sea shore. it'll help
I had that problem and spent over a year in speech therapy. I still slip up from time to time. Try to keep you tongue on the roof of your mouth.