Projects on the whitelist don't require an actionable item. You just pick a project, and then post about it to a twitter or facebook account with over 10,000 followers. With a link, of course. Then make a post on Steem with all the details, including links, screenshots, and proof of ownership. Lemme copy/paste from our guidelines:

Promotions on chat platforms (e.g. Whatsapp, Telegram and similar) and Instagram will not be considered for potential reward (unless otherwise specified by the project owner in the Task Request).
The submitted campaign should performance with a minimal total reach of at least 10,000 unique users and CTR (click-through rate) of over 1.5% on Twitter and 1% on Facebook (unless otherwise specified by the project owner in the Task Request).
To be considered for potential reward, submissions should include valid and verifiable proof of the visibility activities undertaken including:
An overview of the goals, bidding strategy, details and choice of target audience, reasoning of said choice, as well as results of the campaign.
Ad copy and graphics used in the campaign.
Downloadable reports (when available) pertaining the activity.
Screenshots of the promotional activity from the platform used.
Links to promoted content, landing page and (when applicable) a link to the ad itself.
To be considered for potential reward, ad content and social media messages in any language other than English must be accompanied by a translation.
Ad content and targeting chosen should show the contributor’s understanding of the project and experience in its applications and uses.
To be considered for potential reward, campaign content must adhere to Utopian Forbidden Content Policies.