TL, DR :
I don't know how to harmonize this melody (explained below) and need help deblocking (questions at bottom)
I have been learning violin for a few years now and I wanted to learn how to compose as well. After learning basic music theory (intervals, chords, degrees, etc...) I figured a good way to start would be to imitate easy compositions from famous composers and practice composing. https://musescore.com/user/30131964/scores/6290082
I started by the melody of the 1st part, I took a very simple motif and imitated the piece.
Then I went onto the bass line or harmony of the piece, I noticed that it started with 2 arpeggios that were decomposed chords (1, an octave above the other).
I struggled on the 1st phrase/1st bar of harmony because I go from a I to a V in the melody. (I noticed mozart had started the melody on the IV degree instead and finished on I)
Then, on the 2nd bar, following up with a chord of the 2nd degree (minor chord) sounds dissonant to me. (I noticed mozart repeated the 1st phrase)
I've been trying things for hours (in the picture below are a few of my tests), but I can't find a solution for a consonant harmony. (later in the piece, the harmony aren't chords anymore, but seem to be almost a small bass line melody)
So hear me out:
how would you go about harmonizing in this specific situation ?
or at the least,
What should I try or look at ?
What "laws of consonance" am I missing ?
Do I need to learn counterpoint or something along those lines ?
Thank you very much for reading this, and don't hesitate to talk up if something is not clear or not good !
EDIT 01: (acknowledgement)
I thank you for your answers. I didn't have allot of free time today so I will research each answer I received on my side and come back tomorrow (Europe time).
I tried both solutions proposed thank you all for the help. To @euryanthebleu; I continued with your advice and tried a few things:
I struggled on the 2nd part with the rhythm, the "phrases" were smaller and I thought it didn't work out with the old harmonic rhythm
Thank you for the advice, I didn't know about harmonic rhythm at all. I still find it hard though to have a nice harmony and a nice melody, but I now have a little more insight on it.