If you have the opportunity to show your work, take it! That said, the general consensus on exhibitions is to show a single body of cohesive work. You'll have a better chance of selling if the work you exhibit shows a consistent, thoughtful vision. If you throw a mixed bag of stuff up on the wall, you'll confuse your audience as to what you're all about, and what they're looking at. If you want to do cyanotype photograms, do them - just display them when you have enough to use the space. Do NOT give in to the urge to cover every square inch of wall-space available - this looks horrible and shows that you can't edit your work. DON'T throw up your "greatest hits" to make sure you have a minimum number of photos on the wall, especially when they're just personal favorites without some other connecting theme than "I really liked this shot". DO allow enough blank space between images so that they can be seen as individual works, but not so much that there is no context from one piece to the next. DON'T frame them with whatever you have on hand, so that the frames become distracting. Framing should serve two purposes: a, protect the work, and b, provide a complementary, non-distracting method to separate the image from the background. The goal of good framing is to focus your attention on the work, not to draw attention to itself.
