My target audience is...
Well, I write for myself so I can't say I really have one. But if I were to take a stab at guessing a target audience;
For my swashbuckler,
Those who like seafaring pirate adventures, mermaids, action, and something that is more story than romance (but still romance). Hopefully an adult crowd, but I could see it falling into older YA reader's interests I suppose... 18-25 year olds, I'd guess?
For my gothic horror,
Adults. Probably adult women, in particular. It's a horror story with all the monster horror goodness but the REAL horror of it is the abuse that takes place. Exploring the mind of the abused and the abuser while showcasing the "fawn" reaction to such as a way victims might keep themselves safe... but also how they might view future abuse as "their fault" because of said fawn reaction. So, it's definitely a bit heavy. Def meant for adults.
How do I reach them?
I don't. Plain and simple. I throw my crap out there and whoever wishes to read can. I don't write for anyone but myself, after all.