To those who are wondering, we had a report can meeting as a grade to go over them. So I met with the other grade on teachers to read / edit all comments. Nothing I had to say was awful, my kids are great! But they are kids and they're not perfect. Some of them are chatterboxes and distract those around them, some have yet to work out the whole raise your hand concept, and a few need constant reminders to actually get working. Normal kid stuff.
Here's an example of my initial comment (I saved the new comments in a different file so I could go over them again):
_______ can follow directions very well, and is extremely self-sufficient within the classroom. He is confident and enjoys participating in conversation and discussion. ______ sometimes struggles with using class time effectively. He knows what he can work on when assignments are completed, though this is a time when he prefers to talk with neighbors, which can cause distractions in the classroom. ______ needs to focus on using his spare time more productively. ______ is a great addition to the classroom, his enthusiasm is infectious and he helps to make the days fun for everyone.
It was agreed this was too harsh.

Anyway, it was reworded to this:
_____ is a confident and friendly student who has a good sense of humour. He has adjusted well to the grade one routines and it is a pleasure having him in our grade one class this year. ______ is able to follow directions and independently complete class assignments within the allotted time. When completing his work early, ______ is encouraged to use the remaining time to his advantage rather than talking with classmates. ______'s enthusiasm for learning and his keen participation in class discussions is appreciated. Well done, ______.
As I said, it's my first crack at this, but they don't seem THAT different except that the second one is much less direct in saying what actually needs to be worked on by the student. Was my first comment really that bad??