Cute!! Congrats, and good job!!
The sticky is because of the high humidity. Not enough moisture gets out of the egg and sticks to the chick. They will mostly work it off themselves in the first couple of days, but you can either rub them with a dry towel to help fluff it, or if they are strong enough for a light bath, you can wash it off. Just be sure to dry them well, and not let them get chilled. I prefer to keep them dry, as much as possible. Just depends on the amount of sticky, and where it is.