Just print off any picture you want, then spray paint a piece of wood black, cut the picture to match the size of the wood. Using Mod podge coat the wood then lay the picture on top. Once it dries, put a layer of mod podge over the top of the picture.
Bits Of Everything: Wall Picture CollageWall Picture Collage. 4 x pictures on a black foam core board, Sealed with mod podge.She used glossy, but said she would have preferred matte mod podge due to glare.