The plans for my second MLP custom. She's a present for a friend's birthday and based of the second Fatal Frame game.
This is how I plot out my pony designs. I sketch the idea first (usually at work in my notebook). Then I get on photoshop and have the bait pony in front of me so I can draw their pose so I can see how the design looks on that pose. Also, so I can make sure the colors I choose look as good on the pony as they do in my head.
Fatal Fly is already finished. There will be pictures of her in my gallery soon.