Since the exposure has already been optimized in the RAW converter, there is no need to make adjustments to Levels or Curves! This is just another of the advantages to shooting RAW ~ the time that can actually be saved by getting it right in the RAW converter.

I do think the image can be optimized by "BURNING" in some of the shadows in the wing areas. The goal is to make the wings appear to have more detail. By darkening the shadow areas, we will be able to accomplish our goal in a natural and believable manner, staying true to the original image.

First of all, anytime we are making serious adjustments to the image, it is always wise to make these changes on a duplicate layer. Since the HISTORY feature of PS is limited in how many steps one can undo, we can always discard a duplicate layer if we don't like the changes we have made. Additionally, we can use the EYEBALL on the duplicate layer to turn ON and OFF the layer, allowing us to see the BEFORE and AFTER of the changes we have made on this layer. Finally, we can also adjust the opacity of the duplicate layer to "dial in" the amount of the change we have made. Three excellent reasons to make changes on a duplicate layer.

Now let's turn our attention to the BURN tool. The BURN tool has a number of options. The first option is to select whether we are going to BURN the shadows, midtones, or highlights. By selecting the shadows, we will be able to darken just those pixels that are dark, without affecting the pixels that are midtones or highlights.

The next option is to set the "exposure." For this exercise, I selected an exposure of 9%.

The next option is to select a brush. For this exercise, I am using a small, soft-edged brush.

With these options set, each pass of my brush over an area of the wing will darken ONLY the shadow areas of the wing ~ and darken the area about 9% of one STOP. I can and did make repeated passes over some areas. Again, the idea here is to give the appearance of more detail in the image by darkening the shadows in the dark portions of the wings. See the next image for the results.