How do you pronounce your [s]? Because it is such a general sound, I understand why there are so many different variations on it, and why so many people have different kinds of lisps.

I have a variation of a lisp, and am wondering how other people pronounce their [s] so I can fix mine. I pronounce it by putting my tongue between both rows of teeth, and then flowing air through one of the cracks in my teeth, producing a sort of whistling sound with a tiny mix of [θ].

If this is in the wrong section or even on the wrong website, please accept my apologies and and delete this post.