very nicely composed — though you're "new to the process", you're getting a good hang on chords and how harmonic content sets a particular mood! i really like the usage of Dorian in the progressions of the conclusion starting at 1:26! :D
since the chords also serve as the main melodies though, it'd be cool to see you fiddle around with making longer progressions that expand past the 4-chord one you've picked as a start!