Forearm designs: inner, top, outer and back, elbow at the top
Try them on the arm: tattoo-canvas-lake.vercel.app, menu "Proposed design". On the arm, nothing goes on or round the man-versus-demon piece.
B · Leonardo notebook (your pick)
D1 · Ouroboros study on the back
D2 · Hummingbird on the back, ouroboros on the inner side
D3 · Flying-machine wing over the ouroboros
D4 · Ouroboros with an anatomical heart
A · Spine + halos (earlier)
C · Alchemy (earlier)