While I'm certain you don't need this advice, here's an example of how *not* to deal with bad reviews.
Cait's review of The Boy and the Peddler of Death
Oh, yeah. Never, never, never respond to bad reviews. I had a Goodreads troll for
The Iron Ring who gave it one star before it was even released and said a wide variety of untrue and confusing things (in my estimation), but I did not respond, despite my honest desire to ask "really? Like...really?"
Nothing good comes from that conversation.
That is, to date, the only bad review I've actually gotten (of about 40-ish between Goodreads, B&N, and Amazon). I've only gotten 3 ratings of 2 stars or less, too (and that among a much higher number), so there is no reason to get defensive.
I've written a fun book. If you like Fantasy (especially if you like Scott Lynch or Brandon Sanderson), you'll probably dig it.