Acer palmatum 'Corallinum'

Acer palmatum 'Corallinum'
Japanese Maple 'Corallinum'

2 available, won't be working with this species in the future

CUTTING GROWN - these are low-yield, limited supply

Please see attached image from Meriggioli's book Bonsai Maples.  The core principle being illustrated -- thicken a section, cutback to a new leader, thicken next section -- can be used to grow any style of bonsai: upright, slant, cascade, etc.