So this is the first draft of the first movement of a horn concerto. I enjoy working in Sibelius. I do not enjoy the viola's C clef. Nor do I enjoy instruments which are written in other keys (although Sibelius makes up for this and lets me write the F horn in C so that it's less irksome to look at in the score.)
I think I'm not linking the themes together enough. And I don't modulate. I should probably modulate. I'm guessing that's one of my bigger failures as a classical composer.