The Flight of the Sparrow question

This is my first book and I'm very proud of it, but I'd like some honest feedback from people who aren't family and friends so I can make the next one better. If you're not interested in buying it, you can find excerpts on Twitter at @kencressman. Any suggestions or criticism would be greatly appreciated. In the meantime, I'm about halfway through writing the next one and will post it as soon as it's published.