How to get better at shrimping warm-up?

I went to my first bjj class recently and I was the slowest person during the shrimping warm-up. I hated knowing that people were watching me awkwardly shrimp across the mat so that the class can continue. It honestly makes me want to not return, but I know that’s a silly reason.

As a result, I want to learn how to get better at shrimping to overcome my fear. Can you please share any tips on how to get better at shrimping/across the mat faster during shrimping warm-ups?