Make everyone's eyes a different color.  add freshness to the faces and blush, and different hair colors, with pink, green, blue hair, show their faces close on a light blue background.  Let them look straight at me with a loving gaze and smile and laugh with their mouths wide open, there should be visible white teeth when smiling.  let their faces express joy and happiness, draw red hearts on the background.  more love.  lots of love.