I love that lemming skin - it's cute!
Whether you can use it outside the PC version is another matter of course...
Unfortunately, with the console versions, you're stuck with what they offer you in the extra add-on packs that you can buy. The (slight) up-side of that is that these packs don't just contain skins, but slightly-altered models that make the skins look a bit nicer. For example, the Xbox 360 version features add-on skins of Master Chief from Halo, and Banjo from Banjo-Kazooie; Banjo's snout sticks out of his face a bit, and Master Chief's helmet is slightly recessed. That sort of thing.
That's kinda cool skin, but is that a mouth or a lemmings nose it has?
Going on the white shirt collar and cuffs, I'd wager that the skin is based on the Lemmings PSP artwork, and that is therefore a mouth. The "Sony-era" lemmings artwork has moved the lemmings' mouths closer to their noses, at the tip of their snouts.