If you're putting together a kind of sizzle reel, you're going to want to grab people right away. You need to got with your three or four best shots of all time right away.
Im not trying to belittle the shot you used for the open or how tricky that move must have been on that unicycle thing, but my first instinct was not one of being interested.
The big areal shot of the beach, and the kids is a good place to start. Give people that different perspective - something impressive first and that will draw them into your channel.
Also some shots of the drone working would be cool - maybe a shot of it following one of the unicycle riders and perhaps a split screen of the drone at work and it mid-air.
lastly, putting some motion of the text would be good. It doesn't need to be a lot of movement but dynamic is good.
The duration is about right - less than a minute for sure. You have to think, people are going to be seeing this maybe while waiting for a video to start, or on FB etc so it's gotta work it's magic quickly.
I hope some of this helps....?