Since I have done my Drizzle pic a while ago (after many many delays), I will show you my little improvements throughout the pic
She was pretty long in comparison which I changed to a much shorter body. Her wings are fully shown with her wing tips over her cutie mark. I also changed the position of her head and tilted it a bit more. Her underhoof is more detailed as well, but not too detailed, since it looked not appropriate to me.
I could’ve made more contrast (more shadow, less light), but too much shadowing often looks strange in my pics. So I kept it like I’m used to, although I’m not aversed to it.
About the comics (what ArkyNoid mentioned), I also do have something in my mind. It’s more like a strip, or my ‘Princess of Rain’ series. Maybe these pics will be my first humanXpony artworks ever.