This is from the BSF notes in the study of The Acts of the Apostles lesson #11. I like the idea of turning Jesus's feelings into a lesson to teach. It is great to go with art work because we reveal a lot of who we are in what we create.
"Jesus became truly human as we are, thought not sinful, for sin is not a necessary part of being human. He experienced everything we experience. He knew what it meant to be hungry (Matthew 4:2), tired (John 4:6), thirsty (John 19:28), sorrowful over the loss of a friend (John 11:35), and broken-hearted over personal rejection (Luke 13:34, 35). Having been where we are, He is not ashamed to call us "brothers.""
Although, not all children have experienced the death of a friend or family member, surely they have experienced a friend moving a way, misplacing a favourite stuffed animal or missing their parents after a long absence.
This, obviously, needs to be fleshed out more but I thought these verses would be a good place to begin.