Lighting in the park

For the shooting in the park, I  will organize a silver or white reflector, so that I can set up something like in the left picture. If I do not get it, I try to get a mirror and a diffusor, this works as well, we did it very often in Darmstadt. I they do not have any diffusors at the equipment room, I'll get sandwich paper, works as well :P 

Will approximately look like this :