Riccia is definitely one of my favs and I could see why it was used so much by Amano to get this NA thing going. Also probably one of the most prolific pearlers out there.
BTW very nice scape!
I am in complete agreement here, and thank you for the compliment.
I'll give you a hint of my scapes to follow for a while: they will involve riccia.
P.S. if you've found these techniques valuable, help share the information with new comers by linking back here in your own journals when you use my techniques!