Okay, I couldn't help but leaving my two cents. I have done a teacher's education and thus have learnt quite a lot about constructive critism. Try and follow these guidelines when commenting on someone's art: 1. Make a nice remark! 2. Point out a pro (something good about it) 3. Point out the stuff you think could be done differently 4. Explain WHAT the artist can do to improve on that As long as you keep the critique friendly, focused on the art and not the artist, no one should be offended.