Ask IH: Feedback on a service that improves your Instagram feed?

I've been thinking about launching a service that helps individuals improve the quality of their instagram feed. Specifically, users would send in any photos they plan to upload, these would then be retouched and sent back to the user for upload (within 24 hours).

I'm also in the process of considering different business models. Currently, I'm tossing up between either a "unlimited" productized service model or just charging on a per photo basis?

So far, all I've done is throw up a landing page(https://upgram.app/) to collect emails and test interest..

Any feedback, insight or criticism is greatly appreciated :)