I had a look at your sketches and notice you do not have an own style. What are the examples you use? You seem to be good at colouring. Do you know this is a job as well?

It surprises me you are able to use that brush shown on the photo. It's hard to believe you can work with it.

Tip: If you use this brush to colour bigger parts use a small piece of sponge or your finger instead.
If you wash out your brushes make sure you push the ends together or squeeze it together and let them dry this way.
Do not push hard if you paint it's such a pitt of the brushes.
Happy colouring.

♥️🍀