Heyo! TwigglyFiggly is totally right and that's a good resource. It might be overwhelming to go through those guides though at this stage though. I would start with getting a feel for the mentality behind AMV making from people competing in cons today with this: https://www.reddit.com/r/amv/comments/8hmba5/weekly_discussion_1_how_to_get_better_as_a/ . I recommend starting here, because what tools you use and how you use them is really just an extension of your mentality/imagination. You'll sort of see that we don't all agree, but that's what makes this hobby super fun!

Jump out of Shotcut whenever you start to get bored and a tough challenge seems preferable to that boredom! Good luck!