Design critiques are not only the way to an improved design, they are also a great educational opportunity for all parties involved. If held properly by following some basic guidelines they can bring along a great collaboration experience and positively influence the progress of a project.
For a lot of designers constraints are kryptonite or a barbed wire fence that is a prison for their design freedom. But design constraints shouldn’t be viewed as problems to be overcome, rather, constraints or restrictions are probably the best tool for creativity. Constraints are good: they give you direction and they challenge you to be better. Constraints force you to try new things and to experiment more.