This one's short and sweet.
No matter the level of feedback: Thank them.
They've spent their time, attention, and brain power on your story when they could have been writing their own.
They deserve that acknowledgement, and they'll be more likely to accept your critiques when the tables are turned.
Also, you've got important things to do. They've given you a pile of notes and you have to sort through them...
YOU ARE READING
Candle Underground's Guide to Critique Groups
Non-FictionUseful Tips on Critique and how they impact the experience both as a submitting author and a critique partner. -A brief overview of group types, with some pros and cons -Giving and Taking critique and feedback -Troubleshooting the Group