This is a great cello part and a bit easier than the A part, while still being interesting. Watch your tuning and rhythm on the longer notes and stop your bow in time on the rests. During those, you can pivot your bow while on the strings to be ready for the next phrase. Look ahead. Good musicians are always looking ahead so that you don’t get fooled by anything. And you are becoming a good musician! YAY! Work hard and enjoy playing this piece!