I can see three clear sections of music emerging. In order to make it easier to talk about the music I will refer to these sections as Section A: the beginning, Section B: the middle/main theme, Section C: the end.
I worked on extending Section A today. I'm pretty happy with the way it sits at the moment. I still need to add bowing markings for the violin and cello part as well as dynamics (loud and soft markings), but aside from that I don't think I will want to change it too much. Here it is:
I'm also starting to try to think about how to fill out the music for Section B: the middle/main theme. I have a theme that I really like, but how do I compliment this theme without detracting from it and at the same time avoid making the music so sweet that it sounds clichéd. I want this section to sound beautiful and uplifting. I played around today with putting a soft piano accompaniment to the theme that sounds a bit "Philip Glass-y" with a regular fast rhythmic pattern that alternates between demisemi-quaver and semiquaver sextuplets. It sounds really cool but I'm worried that this accompaniment might overshadow the theme or make it sound too busy. I will do some more experimenting tomorrow but I also feel that it might be a good idea to take a step back and slow down a little. I feel like I've been trying to write too much and have forgotten to take small steps. I wonder if in taking smaller steps (and thinking about each individual note rather than the whole theme) I might be able to produce music that is closer to what I want. Here is and example of the "Glass-esque" Section B:
I also tried putting the main theme from Section B with the Section C accompaniment. This worked really well so I may use this: