Adonis, my congratulations!
It is quite an achievement, even though unexpected and a bit of on a lottery side. On the other hand, with millions of pictures produced daily by hard-working photographers around the world, chances get picked by NG are like winning in a lottery anyway.
I managed to squeeze one my images several years ago to get published by NG, yet I was paid nothing since I've uploaded it to NG Yourshoot portal and voluntarily gave up on payment as part of participations agreement :(