This is a nice photo, but it's way too dark. If you are just learning RAW, and using Adobe Camera Raw, try sliding the exposure slider to the right more. If you look at your histogram, all the info is to the left of center, in the shadows. Lighten them up, then add a little black for contrast if you wish to process all in ACR. I did a quick edit using Nik Software's Vivesa 2, and all it took was a Brightness adjustment to make your photo pop.