heres a quick fake ear, i made for this charter, it worked with the palm tools i had on hand.. hope it helps some for you or gives you a better idea. or a broader selection of tools than i have.
- using a #9 - 1/4" -6 or 8mm gouge shape the top and rear side,
then shape the rest of the ear with a fine pointed detail knife on the outside, the ear tapers from rear to front
- i took a sharp #5 -3mm gouge with a very light touch, i worked the inside,
you got to be careful because the thin edge will chip out if you get too rough or if the tool is dull...
but with 3 chisel cuts and some quick knife work you can reproduce it. i don't pop out the chips. i leave them hang, and trim them off with the detail knife, it keeps down tearing and chip out.
lets face it on caricatures, most times only lines of deception that features exist, nothing is to scale especially on the first tryouts of new methods.. paint or wood burning brings out most fine details.
just don't put the ears too far front or back, and you might want to get them even in height .
i use 2 straight pins i stick them in where i think the hole in the ear should be on each side, then compare from every angle and adjust one or both pens till it looks like they go straight through the head.. like one long pen...
looking like Steve Martin with the arrow through his head skit he dose
or just cover them with hair and don't deal with them...
even some great carvers admit they carve the hat over one eye or ear so they can finish faster and only having to carve one, eye or ear, theres not much alignment problem that way.. but you need to develop your own short comings..
sorry if this falls short or confuses you, hey i tried..