Big Dreams is a really good book. The plot of the book is very good but I would say that you should work on spelling, making sure that you put in the right amount of detail so that it leaves the reader with enough information to be satisfied, and making sure that it doesn't skip around from...let's say her getting dressed to "Oh and then I was downstairs and we left."
I hope you don't get mad, these are just my opinions and you honestly don't have to listen to them and I hope I didn't offend you in some way.