[Left to right]
1st - Sketch phase:
Sketching character, you can always find references of poses of real life people on google. after you found a desirable pose, sketch it (do not use the technique where you drag the picture of pose and then reconstruct it) just do it by looking at it and try to majorly change the whole perspective. you can tilt the image, tilt her head, change some of the parts, etc. so that you can practice your imagining of new poses. That way you can make your own pose someday without needing to find poses on google.
2nd - Lineart phase:
It is one of the tedious parts of making anime artwork.
You only need a 2 brushes and that is the line stroking brush or any default brushes there is that can do thick&thin lines and an eraser. Sometimes i do believe you don't have to use Eraser since it will somehow destroy some parts, Try not to use eraser and practice the one-line perfect stroking.
The faster you improve your stroking, the faster you can finish the artwork
3rd - Base Coloring phase
As tedious as the lineart phase, but its faster.
Why is base coloring needed? well, to make sure you shade the closed-space parts...
This is recommendable for those type of people that is having trouble on shading parts that interferes other layer.
If you wanted to not interfere the other part, then base coloring is what you need.
4th - Shading coloring phase
This is probably easier IF you can distinguish colors easily.
I've already done a tutorial of "counter clockwise color picking" in color wheel.
Study the color wheel's color and rely on your color senses.
There is other technique you can also use to shade and that is by using "Multiply" layer, but i do not recommend it at all
since 1; It can never accurately pick the right shade color sometimes.
and 2; you might not understand the concept of the color wheel.
5th - Highlights
You can use white as the solid color for highlight, or the usual "Luminosity" layer, i do not recommend luminosity sometimes on certain parts.
For example the leggings and the boobs. They can sometimes overly highlight
so make sure you use white color or any light colors instead of luminosity, always rely on your color senses rather than build up layers
6th Gray-scaling it for Checking
This is necessary to check the whole image's color value
whether its right or wrong.
As you can see here, the color values are corrected.