This piece is getting difficult. It definitely is an advanced piece. I had to redo the top tail feathers - it didn't look right the first time.
Then the individual back feathers were not too bad until I had to put the silk edging on. I had to go to full Japanese embroidery mode - awl to split the silk (1 into 2), tekobari, my prescription glasses for JE, finger cots. It took some getting used to, the silk sinks quite a bit into the floss, unlike using floss on top of floss.
It does not look good - I'll have to sleep on it.