Sometimes a picture can gain so much from use of the brush tool in Lightroom. I often use it to add a little brightness and clarity to faces but it can do a lot more with a little imagination. In the sample shot posted below the I added simulated rays of light on the subject and reduced clarity in the upper part of the stream to provide and ethereal feeling. Version 4 of Lightroom includes sliders to adjust the color temperature of the masked area. It gave the bluebonnets a little boost of blue in the image.