It looks like you've done a great job naming and alt tagging your images, and you've hit a number of the main points that we have listed on our Image Optimization blog post and our SEO guide. That is some killer SEO work :)
I did a quick search and it looks like your images are appearing, but you can always double check that Google is indexing your images by heading over to google.com, and then searching
site:yourdomain.com and then clicking the Images tab.
Have a great day!