Good effort!

I liked the interface - nice and intuitive.
I liked the way it worked.
But, the no. of letters/word in each clue would be welcome, like esp. 27 accross.
Check your spelling of the 2 isles (one I live near to and can see from the hilltops on a clear day, the other I visited many times when I worked on the ferries thereto)
"Prooving"? (8 acc.)
24 down - a house or tent?
Would have preferred a "Hint" button rather than just "Reveal"

Long time since I've read God Emperor of Dune" - never mind "Dune" :-)

BTW, I'm already om the 2nd level to becoming a benne geserit, as I can move my little toe independant of the others :-)

>...at creating a crossword is at http://ndragan.com/ukr/dune10x10.html
>
>Critics welcome.