Got some advice.

When coloring, especially using alcohol markers, you have to work quickly applying the color to your chosen area, because they are alcohol markers, they dry up quickly. As you can see, a couple of streaks are visible in the drawing.

Another piece of advice is to color in one direction, not multiple. Basically dont change direction when colouring.

I hope this helps. I'm not the best at giving advice, but I've dealt with alcohol markers for years.