Add the beetle, puppet wrap it so it looks like its standing there. Lastly add a shadow below the beetle, using a soft brush with about 60% opacity. Then just add some touches and transform it.
Extract the barn from its backround. Add tex onto it like I did, change color to dark brown and then blend it using multiply. Convert it to a smart object by right clicking onto the text layer. Then once you've done that go to edit - transform - disort and disort it so it looks real.
Lastly put a mask onto the barn and mask it like I did using a soft black brush.