Hi Sarah
Personally, I like incombustible design. Wonderdraw makes me think of women's underwear. Which is not a bad thing, just perhaps not in alignment with your business.
As to the spelling problem. I am familiar with it. Try getting an American to spell Yong Kang correctly (grin). Then again the trend these days seems to be toward goofy names that I neither can spell nor pronounce.
If it is available you could buy the incombustable domain as well, then if they don't spell it right, they still will be directed to the incombustible site.

