I find the Apple Family the most interesting when making them human. Out on the farm. Rustic. They're looking at something. Maybe Derpy trying to stuff letters into the mail box.
No matter how you portray Big Mac as a human, he'll mostly look like Ken from Street Fighter. The thing is I wanted retain his soulful gentle eyes.
You've already seen my human Applejack. No big deal there.
There is a drawing of the 3 floating out there with Bloom in overalls. It's perfect. Just use that for her clothes, but change it up a little bit.