Hn. I actually think that the "amazing" part was a kidding title. Or pride. Like, s/he is proud of the map, because mazes are freaking difficult to make, or it was their first map, or something. Whenever you create something you're incredibly proud (at least at first) and want to share.
Still, instead of just saying "I don't like this, it's not as awesome as you're saying." It's generally accepted to add constructive criticism as well. AKA: "I think you could make this better by ________. In my opinion the map seems a little _______." Which lessens the blow and helps teach them something.
