I did made that, and sorry to steal the g4 ponified version for the design of Grace. The 8th Doctor's hair was just like Pink Diamond's Hair Design, and I did made the color of his cravat so right.
Grace's Mane was so right in a design, although… I confused on why her mane was like a sunrise. I did research about "Strawberry Blonde Hair" but I have no choice but to mix the 2 types of colors, and i'm really sorry if her mane was so confusing.

The cutie marks was the same, but I added a little bit about Grace's cutie Mark, if she's a cardiac surgeon. So I added a heart shape on the top.

I hope you like the versions of the 8th Doctor (Redesign) and Grace Holloway. No negative comments please. and Thank You for seeing the artwork and reading this description bellow.