Save The School Girl

One girl is missing. Many kids had come here for picnic and now they have all returned except this one girl who is probably lost somewhere in this forest. It is not dark as yet and we can still hope to find the girl and rescue her. Would you like to accompany me as I enter the forest to find the girl? Look, I see a thing there. I think it is a clue left behind by the girl. Let us find all such odd things and perhaps we can connect them correctly to solve all the puzzles in order to find the girl.