Invoice Tracker Wireframe + Interaction

I'm exploring an invoice tracking tool for Freelancers.

Here's my initial wireframe + animation showcasing how users can interact with the graph to filter by invoice type and quickly complete tasks. For example, a freelancer can isolate all the sent invoices and then take an action like sending a reminder to their clients.

Let me know what you think!

If you're a freelancer or agency, I would love to hear your thoughts. What struggles do you currently have creating and collecting invoices? How could a tool like this help you manage projects and get paid easier?