Small Reflectors What Is The Best Way Or What Is The Best Reflector Board To See Small Dents On White Cars?

What is the best way or what is the best reflector board to see small dents on white cars? - small reflectors

See I'm learning Paintless Dent Repair and across a network as a reflector for most students, but when I try, it's in the white car use is extremely difficult, one idea would be very grateful, thank you!