Totally agree with what Prop Wash wrote. I would add, a top down shot is always great. You could have started real low, almost in the castle, then slowly risen straight up to reveal the castle...no movement side to side or forward-backward, just up. Yes, you could end with a medium shot of the castle and do a long pull out but your opening shot was the reverse of that and it worked fine, so maybe you don't need that.
Lots of forum members talk about telling a a story with a video. Always think that way especially when you go out to shoot the video. Knowing you were going to shoot that castle, on your opening shot, you could have framed it a bit to the left and put your title CG over the right side...over the ocean. You see that a lot in the movies. then a close-up of the castle, the circle shot, etc. Not all shots have to be moving. If you're telling a story, how about a shot just sitting still behind the castle with just half of it showing on the left or right and ocean in the background. Then, you're showing the POV of the people who lived there hundreds of years ago. Great start though. Keep at it and have fun!