Great job for your first time! I really admire your enthusiasm. Something that might help is to write a few things down before you start and establish a pattern that you follow every time. For example: talk about the cover, then characters, then story, and end by saying who you would recommend it for.
The first is the book Tales of the Madman Underground by John Barnes, one of my all-time favorite YA novels and one that doesn't get enough attention in my opinion. http://www.worldcat.org/oclc/236344977
The second is WorldCat. I would really like to see more people linking book titles to WorldCat, which helps readers find them in libraries, than Amazon, which helps people put money in Amazon's pockets and contribute to the death of local bookstores. Here is your list with WorldCat links: