Awww your babies are sooo sweet. Rooting looks great! You just need to get rid of the frizzy look, a good conditioner (it is a must on mohair) will give you that final and perfect touch. I like to rinse mine of after a minute or 2.
Another way you can straighten the hair is to put the warm rice sock on top of the hair and keep it on for few seconds. This way the hair won,t dry out as with a hair dryer, (due to the moist in the rice sock).
You did a great job on your first atempt and I am sure you love them to bits!!!