That poor little baby needs a vet ASAP, not later! How in the world could you even think that a cardboard box could house that beauty, even temporarily? That snake needs a proper enclosure like now, not tomorrow! Please do a little research before you even think about purchasing another snake. They are very hardy snakes but not when they get stomped on, even by accident. The point is that poor baby looks to be very badly injured and needs a vet. Please get that baby the help it needs now before something else bad happens.