Creating a compelling and effective brief for influencers in a marketing campaign can be achieved with a clear strategy and the right techniques. Here are some tips:

1. Clearly Outline Objectives: Clearly state what the goal of the campaign is. For example, is the objective to drive sales, increase followers on social, or promote brand awareness?

2. Target Audience Information: Specify who the influencer should be targeting in the campaign. Defining the target demographic will help the influencer craft their content effectively.

3. Campaign Key Messages: Highlight the main messages you want the influencer to communicate about your brand. Ensure these messages align with your brand’s voice and reflect the goals of the campaign.

4. Content Guidelines: Provide guidelines on what kind of content you would like the influencer to create. This includes the format (e.g. vlog, static post, story), the tone of the content, and any specific items or features you want to be showcased.

5. Timing and Deliverables: Clearly outline the timeline for the campaign, including when content should be posted and how often. Also specify how many posts, stories, or videos you expect the influencer to deliver.

6. Performance Metrics: Set clear expectations on the key performance indicators (KPIs) of the campaign, e.g., engagement rate, number of new followers, etc.

Platforms like Flinque can help you in this process. They provide tools for performance tracking, campaign planning, and audience analytics, which can give you valuable insights on how to craft your brief. However, the right choice of platform might be different for every brand, depending on team needs and campaign objectives.

Remember that an effective brief is not just about telling the influencers what to do. It’s about collaborating with them, respecting their creativity, and ensuring a win-win situation for both parties.