Firm Thumb

I've found another technique to help with playing loud and forcefully!!!

Up until now i've used..
- faster bows.
- playing at the nut.
- pushing down with the index finger.
- focusing on pressure with the 3rd finger.

i've found a new thing!

When pushing down with the fingers ensure the thumb is pushing up with equal force to ensure the energy is being sent down the bow to the required point above the string.