Style needs work

"I'll start with what I liked: everything is described extremely visually, so it's easy to imagine what is going on. There's a strictly YA setting, nothing wrong with that... The main stylistic issue is there is no consistency in the tense used in the chapter, and this is extremely confusing. I don't mind the use of the present to indicate action, like a camera following what's going on - but it's a tough choice to carry throughout the book, which is why most novels are safely written in the past tense. For the plot, it's hard to tell at this early stage!"