Well, to draw comic flash well, you need to have a good understanding of anatomy and perspective. Also, pay attention to the use of colors and lighting to create a dynamic effect. Another important thing is to plan out your storyboard before you start drawing.
Start with simple sketches and practice a lot. Focus on the movement and expressions to make it engaging.
The key to drawing comic flash is to be creative and keep it simple at first. Build up your skills gradually. Experiment with different styles and techniques to find what works best for you. Don't be afraid to make mistakes; they're part of the learning process.