Hehe, this is our by far our MOST asked Q! Here's a TON of hints for you:
We really, really try and not send our spoiler pics (b/c it's such a small puzzle). Here's a hint: while most people start with corners and edge pieces, we think you'll FINISH with "corner or edge pieces" (IOW, corners and edge pieces are only corners or edges if they're used on the corners or edges) 🧩😄
I also will say that many others are posting them in item/shop reviews and there's even a really nice review by the "Karen Puzzles" channel on YouTube. Many can be found Google searching "#puzzleimpossible" 🧩😷👍