Not sure how you wanted to photo to turn out. But if you are exposing the subject - I think you did a good job. Maybe you can expose +1 so that the subject will turn out brighter. I have seen some of these type of pictures on the ILP cover image. I have asked Amber - I know one of her photo won the challenge that showed a set up like this. I have tried this several times too, but I think I will have to try again.
In that Flickr image, to me it looks like the room is just already filled to the brim with light, as if there are windows all around.
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