Shall we play a game?

For the past few years I dabbled on the thought of making a small game as a new platform of story telling because I always wanted people to explore the worlds I created a bit more in depth, it doesn't have to be very deep though but there is always that nagging feeling whenever I see a movie or comic for wanting to see more of that certain world.
Early this year I got more excited to the idea and bought a software that is somewhat more user friendly and played around with the mechanics and got more excited for trying to give it a go so my aim around this month ,or coming few months depending on how far I can go, is to create a very short story platformer that consists of only one level of gameplay with a boss but will be improvising along the way, because whenever I start planning on something the idea expands a lot in scope and the more I spent on researching about it I tend to overthink and the project will always be placed in the back of my mind never finishing a product,
so I want to approach this project in small steps and by means of semi-improvisation (I have a general idea but the details will come during the process).
So I started with a quick sketch on how the intro might play out and last night was toying on how the sprite sheet of my main character will look like during the gameplay.