Grow fade in.

I could have easily added in a fade in circle with the word grow using Premiere Pro, but i chose to do this part of the animation using cell also so it would not look out of place, or too smooth at the end of the animation. to do this i simply slowly faded out the tree in each frame.

and faded in the circle at the same time.

once the circle was faded in i started to rub out the second circle layer that was covering the word grow, to make it look as if the word was being scribbled in.