You mentioned online resources assume terms you don't know, but I see it differently. Learning those terms is the fastest way to get past guessing. For your brownish stone, try the taste test - just kidding, but really, check if it crumbles easily. Sandstone often feels gritty, while siltstone is more like pressed mud. I started with a free app that uses my phone's camera, and it helped me spot common rocks like limestone by its fizz in vinegar. Give it a few tries, and soon you'll name most finds without a guide.

Oh that's a solid move, way better than trying to wrangle glitter-glue masterpieces to the copy shop. Pro tip, scan a bunch of them in one go when the kid's not looking. Then you've got a folder of art ready to use for anything, and you can let them pick their favorite for the invite. It saves the "but I wanted the purple dinosaur one!" meltdown later. The slightly crumpled paper and weird smudges make it look legit, anyway.

Totally get that perfectionist feeling! What helped me was learning to step back and see the whole piece instead of just that one spot.

But what's the real draw, the challenge or the memories?