I thought the amv was quite redundant. It seems like it was this constant mesh of random scenes at an ok set of pace and transitions. However, I continued to watch because I love this song and Chihayafuru. It's cute, and it's not as bad as a lot of others, but I don't see any kind of coherency at all, except for 2:38 onward, because it really focuses on Arata.
I'm kind of confused as to why it got into the finals at Akross honestly, but it's not only your video trust me. Nonetheless congrats, I know there were videos muchhh worse than yours, and at least yours is well edited, and as someone that's seen the anime I can appreciate the emotion behind the scenes, as well as more atypical and non-used scenes that cover the entire series. But I can't get over how random it is, and its cookie-cutter cuts and transitions (not literally.)
Not bad though, sorry my comment seems so harsh. I can definitely see you improving much more though. I've been subscribed to your youtube channel for some time, and you have the potential to do much better. Seems other people really like it though, so keep up the work.