Hey there...That's the same thing I do with my girls...no body cuts...
this site can give a little help
http://www.ytca.org/grooming_clips1.html For ME.....These are the only trimmers I use...and round nose sizzors.....
The WAHL trimmer (1st pic) is PERFECT for ears...the booty... and under/around the feet.
The 2nd trimmer with the little 1/4 head is perfect for sculpting like under the eyes....or between the eyes ...if hair is sticking into their eyes...(I LIKE a clean face and do trim the eye areas)
the 3rd pic is a personal trimmer from Sallys Beauty Supply...the comb attachment is great for trimming loose hairs on the face and ears.....