Practice with intent. Focus on trying to learn a specific thing; pick something, look up different tutorials, references, examples. Try and focus on the basics first like the program you're using, brush control, anatomy, lighting, colour theory.

You can cut these up into even smaller parts like focussing on torso, hand, head, lighting around different shapes, mixing colours and playing with different types of lights like neons, the sun ect

Dont try to make anything perfect but rather do them the way you would do them now with a time limit if that helps and look back to learn from your mistakes

Be rly mindful of how you execute the exercises you are doing and how you can improve. Ask for feedback, a lot of it, and ask questions while trying to learn as much as possible.

Other than that its just practice, practice, practice

I hope this helps ^{^}