My aircraft is a Cessna also. When I changed the tubes and tyres I had a licensed engineer close at hand, as I always do when working on the aircraft. Despite having substantial mechanical engineering experience myself, I always ensure my work is checked as satisfactory.
Make sure you deflate first so you don't get half a wheel embedded in your face when you crack the last bolt off. Make sure you don't snag the tube when you bolt the wheel back together. Make sure you align the tyre correctly. Maybe other aircraft are more complex (I've only worked on my own, so couldn't comment), but changing Cessna tyres is not difficult.