This is great! One improvement would be to not use an example that's "meta". Your example company is "YC Series A". It takes mental effort to separate the series A narrative that is your article, and the series A narrative that is your example company. This problem is at its worst on the "Use of funds" slide: "We're raising $50k to scale to supporting $1.5B in Series A funds raised annually." The couple of seconds spent in interpreting that correctly is an avoidable distraction.
Just avoid the common trope of examples that are "meta"!
Just avoid the common trope of examples that are "meta"!