Thank you for your feedback.
Since the transitions felt forced for you, how can I fix that? Because I've seen sudden forced transitions in great music before. A good example would be Hungarian Dance No. 4 by Brahms. If you haven't listened to it already, you will notice that around 2:00 minutes into the piece, it suddenly and forcefully changes from F# minor to F# sharp major, which I think is pretty smart of him to do, but that's just me.
Symphony No.4 by Brahms has to be one of my favorite symphonies ever, no joke. I think that the point of the piece I composed is to be mostly E minor tonic though, but i'll try to include more chords such as Mediant and Dominant.
Okay, how can I make them sound more fluid when transferring from minor to major key?
I wasn't planning on naming it Washingtonian until my father told me to do so, lol.
Like I said, an example would be Hungarian Dance No. 4. Oh, and another example of a great "sectionalized" piece would be Beethoven's 5th symphony, 4th movement. Around 3:30 minutes into the movement, it forcefully transformed from C major to C minor, which indicates that fluidity isn't always there, and that sectionalization can often occur in music pieces.