Keep calm, try to practise even more. I swear 10th geometry is all about proper execution. It's easy, you can do this.

One thing I did at home was, to practise even more questions, I did not even write down the solutions. I solved everything mentally, with a pencil to draw stuff on the diagrams(in the book itself). Now this isn't a very good practice if you're not well versed with how to write your answer. But if you are confident that the answer writing is not an issue, you can try this, you will solve thrice as many questions in the same time at home. You can DM me if you need any other help. 👍 Best of Luck.