Am not even sure that it will ROTATE, believe that mostly it will show your work to those who come to FAA from your Blog or Website.
If only 5-10% from them click through to FAA, then you have to really build up those who read the blog a lot, to get anyone to FAA...
Personally feel that if you have a lot more followers on Facebook or Twitter, sending them directly to FAA from there, or email is much better than a Blog.
An example is my Email signature, it states "Just check out My Latest Work" to the Image page, which show the last items you uploaded...
An EMAIL list of buyers of your work is the most important. If they like one or more, and you get them on the email list, just send one email per week to all.
In your description, if you state something like you will send a certificate of authenticity to buyers who email you, it can help you to collect the email address.
Tweeting all my Latest links FIRST in the list that TweetAdder Uses to send over 700 of our tweets, automatically sending 80 of them daily... Saves me a lot of work. Each weekend, I switch the list with one which sends only my latest 160 images. For weekends are when the largest number of readers are checking tweets. During the week, it rotates all 700+ links to twitter. Its easy to compile the latest 180, as I add to the top of my Twitter list, each one as they are uploaded. Then just copy the top 180 of my links.