When someone asking for opinions and ideas, do not condemn and criticized negatively straight away just because:
a) you don’t like it.
b) you can’t see the bigger picture.
Instead of saying “No, it’s a dreadful idea” or “No, it doesn’t appeal to me”, change it to something that is more motivating and encouraging sentences. Instead of saying no, change it to “let’s try this” or “let’s add this” or “let’s do this”. An idea is never a bad idea just because you disagree. Look at it in a different perspective. Approach it in a positive manner. Add value to it. Don’t shut it down immediately.
Stay positive people! =)