That looks awesome, but please beware, cardboard fursuits take in moisture like nobody’s business, and get super dangerous when mold or other fungus start to grow.
It's alright-- maybe it can be a little wearable if you seal it to the max-- like, completely cover it in tape so that it won't get moldy too easily. Just have in mind that Cardboard Fursuit don't last for Too long. Hope this helps ¯\ (ツ) /¯