While I have nothing against women wearing pants, and there are absolutely many times when that is the more practical option, I really prefer women (especially women I'm attracted to) to wear dresses/skirts when it's realistic to do so. It is much more feminine and attractive.
Skirts attract me more because they are feminine, most of them show legs to some extent, can show stockings, and have a wide variety of styles to choose from. Certain pants are nice too when they go well with the rest of the clothes but they are not as interesting.
The skirt you are wearing is bit long. Little bit of thigh must be visible and provided that the girl has big thigh (not much fats) and healthy long legs. I find girls attractive in slim fit jeans also provided she has wide hip, and big ass (not obese) and rest what I mentioned above about thigh and legs.