Paul wants Christians to live in harmony. That's verse 27 to verse 2. Draw things that represent 'Harmony' (people getting on and not fighting, living at peace with each other, maybe a choir singing in harmony).
Paul wants Christians to copy Jesus' humility (being humble). That's verse 3 to verse 8. Draw things that represent 'Humility' (people being humble and serving, putting others first, Jesus going from the comfort of heaven to the pain of the cross).