Hey keep update on if you figure some cool ways to try this out.
I use this myself to escalate kino/gauge comfort. It's like Gambler's method of brushing past girls in a club.
I'm not usually indirect but in a single set with one target I brush her hand to begin gauging kino comfort, escalating into more noticeable touch and then back into discreet touches like brushing her crotch and tapping her thigh.
Also wanting to try drawing a map from her knee into her inner thigh
Only thing I know for the breasts is giving her under-armed, close hugs, applying pressure to the breasts. Not exactly impressive but usually they want more hugs and seem slightly flushed so it works for now.
Keep some updates after you try some out
