vampsoul - check the CFA instruction packet and see if it specifies which size basketball is required, you may be able to use a women's.
Obviously practice is the most beneficial thing you can do. However in the course of my practice and the actual test I noticed that if I tried throwing it at a higher angle I did much better. Namely because a 45 degree angle is the optimal angle to throw the ball. When you're practicing take that into consideration and try to find what works best for you.
Having a friend to get the ball and throw back to you is also nice.