You can find the reverse side of his design here.

Troutshinie has no physical description given other than his pattern, so I came up with my own for him. I used a slightly tweaked and more updated version of his dad's lineart for him, he's a moderately-sized but stocky poofball.

For his pattern, Troutshine is described as a brown-and-white spotted tom. Since his family tree icon is white with brown spot patches rather than brown-and-white with a spotted tabby pattern, I changed his pattern to be white with brown patches.