Once you have created an IMVU product, you can do more than just the catalog snapshot to promote it.
The Description area of the Product Submission Page allows for the inclusion of HTML code with both text and images. Many of our IMVU Developers have made an art of self promotion by taking advantage of this area to really sell their products.
There are no firm rules for your Ads, so the sky is really the limit. Some suggestions might be to really think about your own Brand.
Is there an opportunity for you to include some repeating logo or visual element that tells your customers that this is one of a larger collection of products? Can there be a repeating background, or decorative boarder that is shared with all of your products? If you are creating a theme or seasonal collection of similar products, is there an opportunity for that theme to carry throughout all your Ad images?
Videos are also very good for promoting a new clothing item, Room, or especially avatar actions and poses. YouTube is a free way to advertise your creations, and embedding your videos in your product description page will help draw attention to you and your designs.
You will need to host your images with another service, but there are several on the web that will allow you to do that for free.