loops around the ears? I ve some doubts, I am showing in this pictures, a model than I am using for game purpose.

can this edge loops affects if some of them are moving inside the ears? I ve seen many cg artist to do not mind about rings of edge loops around the ears.



and consider all the whole topology , may I change something?
Change the geometry of the ear to make the creases work. You may leave the edges of the mouth flow to the back of the head- it doesn't matter. The key here is to rearrange the edges flow in the way it creates a loop (see the example below).


Remember that you can always select the edges to crease then press the Shift+E to make them sharper.