First, place the SG90 Servo Horn part on the Ear Base (L) part.

Align it with its slot on the ear base, and make sure it sits flush with the surface of the part.

Now that the servo horn is in place, press the whole assembly onto the servo motor.

Make sure the ear is pointing up before pressing it down to avoid any misalignment.

If you want to be sure the ears won't come off, you can screw the servo horn in place using the small M1.7 x 3mm screws (from the servo bag).

However, we don't recommend doing this.
In the daily life of your robot, its ears will get bumped into. If they aren't screwed in, they will just pop off safely and wait to be reattached. If you screw them, a clumsy elbow strike could easily destroy the mounting hole forever!

Now, repeat the same process for the right ear.

Make sure both ears are properly aligned and pointing up before moving on to the next step !

We'll start by placing the stripes in the ear fronts.

Slide the Ear Stripes (L) part into the Ear Front (L) part, making sure they are properly aligned and fully inserted.

Now that the stripes are in place, we can attach the front of the left ear to the base.

Align the two parts and press the front of the ear onto the base.

The left ear is now assembled. You can use a M2.5 x 4mm screw to secure the front of the ear to the base.

Place the screw in the hole on the middle of the ear and tighten it until it's snug, (but don't overtighten it to avoid damaging the parts).

You know the drill now, repeat the same process for the right ear.