Early summer is a great time to check out the local galleries and stores to see what the trends are and what the competition is. Today I went with a visiting friend around Kennebunkport, and we checked out the art in a few galleries. We noticed a lot of the art is smaller format, due to the economy, no doubt.
One gallery owner likes to carry framed art that fits easily into a travel suitcase, even when bubble-wrapped. he even keeps a carry-on suitcase on hand to prove the art will fit in it comfortably. You need to work with various factors like this when planning your strategy for the season.
Don't forget to create artwork to fit standard-size, or consistent-size frames whenever possible. It helps to keep everything standard when exchanging one painting for another.