Cello Sonata no°2

As you've seen already, this is my first post! I currently finished my 5th piece, which is this cello sonata number 2. As I am implementing atonality into mostly my 2nd movement, I find that the 2nd movement is too difficult for me as a person that only learned cello for about 2 years, so I do ask for any suggestions to simplify that part, thanks! The audio file my not represent the effects that will appear on the cello, such as the harmonics, left hand pizz etc. But still, please if any one has any suggestions or advice, please comment below! I am looking forward to share with all the piece that I'm currently working on, which is a piano piece. (btw, also I will add more slurs in my score later, cuz it seems as though it is weird without a lot of slurs in such a fast tempo)

Cello Sonata 2.mid

This piece has plenty of 20th century techniques, including the use of gliss before the end of the 1st movement. To be honest I feel its still a bit dull for the first movement, like I hope you can expand the range a bit more above that high G. I feel the gliss at the end may be a bit unnecessary; I rather keep like a gradual compilation of the notes into a chord... but im not sure if thats possible on a cello. 

Thx for the advice!

8 hours ago, zhenkang said:

This piece has plenty of 20th century techniques, including the use of gliss before the end of the 1st movement. To be honest I feel its still a bit dull for the first movement, like I hope you can expand the range a bit more above that high G. I feel the gliss at the end may be a bit unnecessary; I rather keep like a gradual compilation of the notes into a chord... but im not sure if thats possible on a cello.