What is a one-sentence summary of the following article?
Congratulations, you’ve impressed a sponsor and now they want to work with you! Now you have to determine how much each post will earn you. A lot of beginning influencers undervalue themselves, but remember the time and work that goes into each post and the benefit you will be bringing to the sponsor.   Some sponsors charge in relation to how many followers they have (e.g., $20 for every 1,000). The average amount tends to be $200-$400 per post. You may be able to ask beforehand whether the brand has a budget for sponsorships. This can help you determine a reasonable price to ask for, but ultimately you are the best judge of your value. Be sure to learn how many posts you are expected to post and when, and whether you will have to post a certain type of photo or caption.  It is important to know all of this before you start posting, and to establish clear communication with your sponsor from the beginning so you enjoy working with each other. It is likely that you will have a contract to sign before you begin work. This will include details about your payment and responsibilities, so make sure they are what you agreed to.  Look for whether the contract says you are in an “exclusive sponsorship” (which means you can’t promote any other brands, which may not be very useful to you), or if this is a “non-competing” partnership (which means that you can’t simultaneously promote a competitive brand. If you’re promoting Pepsi, you can’t promote Coca-Cola). When you finally post your sponsored content, you must disclose in the post that it is a sponsored post.   It is illegal not to disclose that information, but Instagram makes it very easy to make this clear. They recently created a tool that allows you to tag a post as a “paid partnership with [brand].”   If you don’t have that feature yet, you can simply include the hashtags #ad or #sponsored in your post’s caption.

Summary:
Determine your payment. Clarify your responsibilities with the sponsor. Read your contract carefully. Disclose your sponsorship in promoted posts.