Here's some tips to help you, in no particular order:
1. Learn how to RCC because you'll need to RCC a lot to do much of anything with Dampierre
2. Use lots of good anti-step moves like FC A, 2A+B, 66A, K, and AA
3. Focus on safe moves such as 6B, B+K (instant), FC A, 2A+B, K, 33_99B BE (GC...