First of all, your son's mech is really cool. I'm impressed with that angled sword holder...so true to a Ninja! Thumbs up using double ball joints for the ankles and excellent overall shaping of legs and arms. 💥
Son : knows how to get inspired and can find a way to get creative when he finds the right piece . Father : can see where improvement can be done but can remember what it was to look like shows talent in evolving work so if he had handed an idea he can see how to make better . The two have great idea and together they can do great thing in designing or engineering
I hope your son one day surpasses you. Teach him everything you know. And if it’s not a LEGO hobby he pursues, teach him how to achieve excellence just like his father!!!