While making the masala, just be careful of the liquid in the masala. Once the chicken is almost done, check on the stock liquid. If you feel it is too much, then cook on high heat till dried upto your satisfaction. Once you add the cream, there would be more liquid. However, you don't have to worry much. Most of the liquid would dry off when placed on dum. The more you want your biriyani with masala, keep more liquid in the masala!