I have this character with eyebrows that are attached to the head. I just extruded some faces above the eyes because I didn't know how else to do it because I haven't seen any tutorials about eyebrows or how to rig them, but I want my eyebrows to be very expressive and do some wavelike movements. I have an armature set up with a head bone, but I don't know where to go from there. Can I create expressions with shape keys or is it more efficient to create bones for the eyebrows? And if it's better to rig the eyebrows how do you do that?
From default cube, go in edit mode, S Y 6
Loop cut like this:
↹ Tab -> object mode -> G Y 6
Add armature > single bone
↹ Tab -> select bone -> ⇧ ShiftD -> Y 3 -> then 3 times ⇧ ShiftR
Check "in front" to see it like in my image
Select cube, shift select armature -> automatic weights
If you now go in pose mode (select armature first), you can move your bones in z- direction and you get:
which looks pretty bad.
But if you add a subdivision modifier to your cube
It looks like this and you still can edit the cube as you want to make it even look better.
If you want to make it easier to move your eyebrow bones, you can limit them e.g. by locking all all axis except y:
and I would recommend adding a parent bone and parent all these bones to that parent bone so you can freely rotate and place your eyebrow where you want.