Bassoon Embourchure

There are many ways to describe a good bassoon embouchure (i.e. one that surrounds and encircles the reed rather than clamping it between top and bottom lips). One is to compare it to a sponge bag with a double draw string (e.g.  http://www.oboes.com/oboeglossary.html )

But I reckon you could do worse than aiming for this:

and avoiding this

or this: http://www.chinatraderonline.com/Files/Gifts-and-Crafts/Garden%20Decoration/Artistic-Stone-products/Gardening-Decorative-Frog-2045285084.jpg