Forgive, I am far from a good critic or campaigner myself, but when I first looked at your email I began looking for where to click (see: "click below"). It would be wise to add an element that clearly prompts the reader to click; you are still permitted to leave the image itself as clickable too.
I was confused about where to click and why? You might want to include reasons: for more information, to receive our next newsletter, to get links to some of what you missed at the show. What would motivate the person to click. As it stands now it seems they are justs tattling on themselves: click if you missed the show. But why click? And where?
Nice photoshop blend for the main content but the fading was excessive and made me feel like I was running out of time to view the image... Fades like that should be used to soften a background image to let a top layer graphic, like a logo or text, stand out more... Next time, try to also use a colored background if you're not going to put a frame around the content... And, you should call CC and ask them to remove the CC logo at the bottom... They'll do it for free...
Can I also suggest you post the email as it looks with graphics disabled, which is how most people will see it first.
Constant Contact Solution Provider and SMS Marketing Specialist