A fanged and fearsome fiend

The time has come for Kevin's Gloaming. This is a test every almost nearly eleven-year-old must pass to show they have all the necessary skills to be a vampire. Kevin will have to show he can transform into a bat, mind-speak and melt into the darkness. Which would be fine, except he hasn't quite mastered the melt yet. If Kevin doesn't pass, he'll be cast out forever. Is there anyone who can help him?