Learning to Draw: Signage for Hot Dog Truck

The two hinged panels of the sign, when I drew shadows extending left from each base, became pantlegs leading to flat black shoes, a man or woman walking right to left. I darkened the inside, the side I could see, of the right-hand panel.
Now the pantleg flattened, no sense of leg in there. But as sign, it sort of worked. The best part was beyond my making: the strip of bright light along the nearest edges of the two panels.
I darkened the shadows, the feet turned ragged.