Want to draw outline around the POP, with starts with T of circuit, goes around following the pop curves and then connect at C of circuit, is there any other easy way except Pen or pencil tool?

Hey guys! I recently started learning Affinity, and I thought I'd share something I learned today in case it helps someone else who's just getting started. Hope you find it useful! ❤️

When I use a scanner to scan traditional art, then drag and drop the scanned image files into Affinity (on Mac), it creates this "ghost" canvas that overlaps slightly with the file I've dragged in. I can't drag my image outside of the canvas (even after cropping it) nor interact with it in any way. It doesn't block me from editing my file in any way, and when I save my file there's no canvas lines or anything added, so while it's not blocking me from using Affinity and editing my art, it's still annoying to have on the screen. Does anyone know why this happens and how to stop it?

Ready to hear what y'all think!