The idea is very nice however the way you edited it, hmm it can be way better ;) Imo, the replays are way too fast at some points, try using smooth slow motions /or just smoothly slow it down at some parts of the replays such as hits, dodges etc. and then speed it up a little again, it should make great difference. Pan/crop would help too Keep it up!

no matarika, we don't flip around for 10 seconds to throw 2 objects

This is quite an innovative idea.
Yes this needs some smooth slow-mo parts, and some shaders.
This es amazing matarika.

~Cheers

ayyyee this is pretty alright, i appreciate that you plan to get better along the way. sure, the editing isn't incredibly pleasant now but I still can't wait

i recommend creating a script and finding someone who speaks fluent enough english to proof-read your script. don't mean to sound like a grammar nazi, but bad grammar in content, that has dialogue, can kind of ruin the content. that and the story is still sort of clunky.

keep it up

the problem with most of these types of videos are that they have decent stories or ideas, but poor execution.
if youre focusing on the story more than editing, you should probably write a script (as marrez said) before the editing.

also the places you chose to threw the kunais out of dobby were poor

good luck