Being an animator is a team effort, so always welcome criticism with a smile. I always have a pencil and pad of paper on hand so I can write things down. Really listen and understand why they are suggesting the things that they are. So many times I have caught myself just making the changes to make them, but not really understanding the intention behind them. When I take the time to understand it never fails to put more life into my scene.
Getting direction you don’t agree with is a kind of a tricky thing in a professional environment. Bottom line, you are working for them. But in good work environment your opinion matters and is wanted. Personally I always try to do what they suggest first and then if it’s not working I can show them why and have a couple ideas on hand that might work better. Sometimes it has to be a certain way and I will just have to make it work the best I can.