C´est très facile, je peux t´aider pour le début, regardes :
Matt, the tall guy with a blue jacket and blue trousers, is standing next to his mother (wearing orange clothes) and his grandfather.(The old man wearing glasses on the left of the picture)
Next to his mother, we can see two little girls, which are maybe seven or eight years old standing with confidence in front of their dad who is wearing a purple shirt and blue sneackers.
And finally, on the left, we can see matt´s grandmother, which is wearing a green jacket and red heels.