A combination of busyness and a limping computer have delayed cello postings. Here is one I've already shared on my studio facebook page. Open in YouTube for a link to the free sheet music, and bring it to your lesson if you'd like to try it! Of course, you can also just play along with the video!
Shifting? Watch how he does it. String crossings? Watch his right arm and hand. Vibrato? Note his relaxed hand. Body and arm posture? There's a lot to see in videos like this where the camera angle and view doesn't change. And note his fingerings if you need suggestions (not on the sheet music).
How many Christmas tunes can you identify?