How do you get from starting small to doing something great? By making successive versions. Great things are almost always made in successive versions. You start with something small and evolve it, and the final version is both cleverer and more ambitious than anything you could have planned.
The small things that you do consistently matter more than the large things you do sporadically. This is because consistency allows you to capture the awesome power of compounding - where small gains compound on each other to create massive change over time.