Congrats for your A!
I did my Astronomy GCSE when I was in Year 10, and I got an A*
I reeeally enjoyed the course - basically because I was interested it in the first place, so it made it slightly easier to retain the information.
For our first piece of coursework we had to complete a Moon Diary, which tracked the path and stages of the moon's appearance in the night sky, over 2 months. And the second piece was to produce a Moon Map, where we had to identify different features of the Moon e.g. craters, lunar maria, mascons, domes, wrinkle ridges and rilles etc.
With hard work and effort, it's quite easy to get near to full marks in coursework, which relieves a bit of pressure coming up to the exam - for sure!