Sizing for counters and joins
Size so the smallest mark survives.
Calligraphic contrast, join thinness, and dot size decide the minimum width. Pick the band that matches the wording length, then prove it on a measured print.
Short single word (wrist, ankle, behind ear, neck)
Use an open Naskh-style construction at the widest dimension the placement allows. One word keeps counters countable and dot groups separated where longer phrases would force everything smaller.
Threshold: If the narrowest counter or the smallest dot gap closes on the measured 1:1 print, enlarge the piece or shorten the wording. Do not compress an ornamental style into a small field.
Name or two-word phrase (forearm, collarbone, rib run)
Keep one baseline with generous spacing between words so each word's joins read independently. Tall ascenders and deep descenders need vertical room, so cap their height before they crowd neighboring words.
Threshold: Hold the print at arm's length: if two words merge into one dark band or thin connectors vanish on plain paper, widen the field, stack with real leading on a flat zone, or simplify the style.
Longer phrase (ribcage, thigh, back, upper arm)
Longer wording needs horizontal room because every added word shrinks each letter at a fixed width. Flat zones tolerate stacked lines with real separation; curved zones compress inner letters and punish tall forms.
Threshold: Confirm every line reads independently at 1:1 with open skin between lines. Curved placements get a body-fit preview plus a measured print before approval, because curvature closes inner-letter gaps the flat proof hides.