Overall, good start!
One thing to consider is leaving the caption on the screen a bit longer. As it was "typing" the 'Fletton Lakes, Peterborough,' as soon as it got to the "h," the caption vanished. Maybe add a second or two afterward.
Being your first, you flew straight. May be add a turn or two to show more of the area.
The gimbal bounce in the middle could edited out if you want a smoother video.
Everyone starts somewhere. This is a good start. The more you fly, the better you'll get @ the controls. The more footage you shoot, the better you'll get @ editing. Someone once said to me, "Experience is the best teacher - it doesn't always have to be your own." To get some ideas, look @ the videos posted here in the Photo and Video Showcase. Those videos are done by people who have been doing this for a bit. If you have questions, I'm sure they'd be glad to answer them.