I used a fur brush at a relatively low size which is an oily brush. I have made my own two brushes from a palette knife but it's not a palette knife but a blender brush and I use these. They are like tiny blender. No pushing or shoving from a photograph. As I said I used reference photo.
I have been a digital painter for many years if you wish to view my other works look at my website or deviant art. ❇
My Painting Gallery
I have also been using ArtRage since 1.1.