city billboard mockup stunning large board green tiled room illuminated ceiling pristine white floor city billboard mockup stunning large board green tiled room illuminated ceiling pristine white floor generative ai rgb editable psd 4k resolution white board design billboard template mockup design large white board tiled room mockup ceiling lights white tile floor room with tiles white wall mockup billboard in room mockup with lights green tiles white board mockup room with white tiles illuminated room large billboard design mockup template white board in room tiled room design room with ceiling lights white tile design billboard with lights mockup with green tiles room with white board white wall design billboard with white tiles mockup with ceiling lights room with large board white board template green tiled design room with illuminated ceiling mockup with white tiles billboard with green tiles room with pristine floor white board with lights mockup with white wall billboard with white