Hey Remi,
I love the style that you have going. It is minial, but has the possibility for a great deal of emotion.
I do have a suggestion on the environment, though. The Garage exterior that you have looks very 1960’s earth. Anything that you can do to increase the visual interest of the environment would only add to the piece, IMO. Even differentiating the trees to look more “alien” or adding stylistic changes to the garage structure to make it look slightly futuristic.
It looks great so far. When are we going to see storyboards / animatic? 