Supporting Documents (optional) can be published reviews of your work, articles about you as an artist, or an overall promotional plan.
SUPPORTING DOCUMENTS TIPS
You'll want to be sure to include a listing of all reviews and articles, with your name and the publication name and date clearly visible on each page. This will assure the decision-making panel that your work has received serious review and give the funder a sense of your potential and the impact you have already made.
Both for your own sanity and for the panelists' (because they have to read the material), choose judiciously. Sending in a pile of reviews in which you're mentioned only in passing as part of a group exhibition or ensemble performance does little good and in fact can be annoying. If you insist because the reference is especially positive or the publication particularly noteworthy, highlight it for the panelists so they won't have to hunt for it.
It's not a bad idea to provide a promotional or marketing plan—for example, the production of recordings, social media or web sites, etc.--for projects whose intent is to advance an artist's career. Here's why: if the panel senses that you don't know what you have to do to actually get visitors to your shiny new web site, they are going to hesitate to give you the grant. And they should. Show them the plan and it's a lot more likely that they'll show you the money.