lol, a professional i am not!:)
i use two cheap light boxes i got from an online drafting site i think they were $18-19 each. they do a good job diffusing the light without overpowering, i also set up in my kitchen as i like this corner and the kitchen's flourescents help also.

here is the after shots of the same autavia with the loose luminous material and the open front and back case style.

back pic

front pic

i used to use two to three desk lamps and an opaque container with sheets of drafting paper taped to it(to diffuse basically a homemade light tent/box), but it was alot of work adjusting the watch and i was never that good anyway, so this works the best for me. quick setup & quick tear down.

j.h.