red is cut 

black is engrave

you can change the size 
it is important that both are enlarged at the same time

there are different sizes for the ear studs
I have chosen a medium size
I used special jewelry glue to glue them
but a glue that sticks wood and metal should also work
put a small drop of glue on the stud
and then press it on the back of the paw
align it as well as possible in the middle and let the glue dry