The letter P is signed like K, but the former is held upside down. Hold down your dominant hand, palm facing in, with your index and middle fingers sticking out like an inverted letter 'V', while your thumb is tucked in between the two extended fingers. Your two remaining fingers are curled in, touching your palm.
Teach your toddler the letter P sign when it is necessary to finger-spell some simple words - or the initials of objects, places, animals, or people's names. That way, your toddler slowly begins to associate the sign with the sound of the letter in a word or name.
This is a useful flash card taught best in conjunction with the other letters of the alphabet.