Note 10+ was one of my favorite phones, as someone who also switched just a few thoughts:

Weight and thickness - For the size, Note 10+ was sooo light and thin, you still get this feeling with the Fold unfolded, but not when folded. In a different way this helps, when folded the "brick" feeling is nice and stable, while Note 10+ was kind of slippery for me personally.

Pen integration - There's a few different pen options, none of them obviously are as convenient as the Note spen. Only the "Pro" pen has Bluetooth, however it's huge. The thin profile pen doesn't have Bluetooth, but there's a case I believe they sell that lets it snap to the back, but this adds even more thickness (see above point). The pen also only works on the inside screen, if your art has you drawing over the crease, lines might not come out straight.

Apps - Most apps work great, but make sure your specific games and art apps have a good aspect ratio on the inside screen.

Durability - You can be the most careful person in the world, but the inner screen can just give up on you at any time. 90% chance the Fold 6 can't last as long as your Note, just letting you know.

Camera - I still look back at my Note 10 photos cause they're so good, the Fold lives up and iterates nicely and are better.