Getting ready for a show is often always more stressful than the actual show. The best thing to do is to step back and take a break every now and then. Let your mind rest before starting a new piece. Remember that this is something you enjoy doing. Creativity cannot be bottled and poured out at will. Often what comes out started months ago in your mind? If you are too pressed for doing and not creating you will not be pleased with what comes out. Now that I have got all that out I feel so much better now.