A mistake you've made in some of your sheets:
In some of your sheets containing multiple layers you've beamed both upwards or downwards. When you have two layers, always write them with one upwards beamed/stem, and the other one downwards beamed/stem. It makes it look much more clear. Just Ctrl-click the first note and press L one or two times to flip the stems/beams.
Another in "Hill Stream Blues" is from measure 18-39, use 8va signs, it makes it a lot easier reading those high notes.