Brilliant. It looks really good. I'm looking forward to it!
Hi, so! Here's how I handled both of those:
1. Give everyone a facedown card from the roll20 deck. Everyone adds theirs to their hand, looks at their own personally, and then puts it back in the deck.
2. Everyone closes their eyes in REAL LIFE, someone moves the card around, then taps on their mic to indicate they're done.
I'm gonna try to write up an online guide soon!