Waltz in D minor

Hi, I'm a 17yo self-learning composer. Looking for all kinds of advice and feedbacks. I composed this piece a year ago.

I also open to all learning opportunities / recommendations.

This is the youtube video, enjoy! 

Hi @NugDumDum

The opening the thematic structure is sentence form. m1-8 is the presentation; where the following the contin. Then it looks have the liquidation? However, phrase structure is rather peculiar.  You have 8 measure melodic phrases. This is rather irregular in common practice.  Further, it is hard seeing what two ideas are you are using in the waltz.  You should probably reconsider shortening the phrases to 4 measures.  I am not sure how the motivic material in b. 21 is related.   I think it would be better start the middle section with pedal, elimating the material before that, that way you have way to modulate to the key from the pedal point.  The irregular rythmn patterns in 6/8 is interesting, and would be make challenging for even the most experience pianist. Perhaps, find a way to make those rythmns to easier to read. 

After the middle section, you also need transition back to main section. It seems so abrupt.  The modulation is just flow naturally.  I feel this is more of rondo (ABACA) form.  Maybe, look at how rondo how writtens in sonata and etc. 🙂

I think it has interesting parts, both because of certain harmonic contrasts and some syncopated moments.
But it's a bit of a mix of styles, which makes it seem a little pastiche, like the ending with the arpeggios in the left hand, which is something new compared to what came before. It's difficult to transition between very chromatic parts and others that sound much more standardized.

In conclusion, I think there are many ideas that, although interesting, blur the overall structure.