Picture on the left:

I used the magnetic lasso tool to select the plant part of this image. Then I used the layer mask to make some final touches. I got the background black and white by doing the inverse selection function. I think this helps the subject pop in this picture and I am pleased with the final product.

Picture on the right:

I also used the magnetic lasso tool to select the lamp in this picture. I did not do the inverse function because I wanted to apply the black and white to the lamp, not the background. Then, I used the layer mask to make some fine adjustments and the photo was complete after some color balance adjustments. I am pleased with the final product of this picture.