I don't know exactly whether or not my characters are 'attractive'. I don't use faceclaims, after all, since my ideas tend to be a lot more specific than what a faceclaim can provide easily.
When writing textual descriptions of characters' appearances, I describe what shapes their face consists of, their eye & hair descriptions, a general body type, notable features, and clothing. It's up to the reader to decide whether my characters are 'attractive' or not. I find it's a bit more reasonable and realistic that way, anyway - I don't consider myself attractive or unattractive, for instance, so why would I write a character's description as such?