Bright and airy color- how can I achieve this?

don't forget... you are leaving everything else you had before the same way..... and are now using the 2nd light that you hadn't used before to do the bounce on ceiling to wash the wall with light.

Some will come down on talents head ( top of hair etc. ) but should look good.

And when you go for the 'bight and airy' look have your talent open their eyes, it makes for a better look! 🙂

I was thinking and thought this might be worth trying when you shoot.

Take the reflector light ( I'm assuming you use the key from right with the soft diffusion on it ? ) and put it near camera and aim it directly at the ceiling. If walls are white ( and that door jamb on left as MTG auto color correction indicates is white ) the ceiling is probably white too.

Now you are using the ceiling as a giant bounce source, which would be soft and overall it would ( if aimed up and slightly forward but not so much that it hits the wall directly ) .. it should give you the white wall and leave your other stuff alone.

I am not able to understand what you had set up for your sample.

maybe draw a diagram ( top down like a floor plan ) and take pic and post it.

maybe then something can be worked out sorta maybe

lighting for movies is pretty tricky and the equipment can be expensive. A house normally does NOT have enough power to use movie quart halogen lighting. Small HMI lights are expensive ( has to be square wave ballast ). Bacially your problem is the difference in light level of the back wall and your lit subject. Ideally you would light the wall separately, but you won't be able to do that I don't think ( power, equipment, room to place the lights and diffusion, etc. ).

If I was you I'd try to bring down your key ( from right ) and your fill ( your studio light in front left of subject casting shadow on wall ? ) to match the wall ( increase overall exposure so it's white, after knocking down the key and fill on subject ) but leave the light on the wall... hard to describe.

If you have the light from right coming from a window you can maybe put some wax paper on the window to bring down light on her face but leave on wall. Buying real diffusion materials would be expensive.

Anne is right. 99% of what you percieve as bright and airy is the result of the 'set' ( colors and soft lighting ). Even the pale sweater color (pastel type color ) adds to it ( and lip stick color too ).

you can play around with levels ( ylift ygamma ygain ) and saturation to help your own shots along but this stuff is really the way it was shot.

Its the way is has been shot: entire background is white and the way she is dressed.