The way to do it is to :-
1) Deconstruct the skill (a bit similar to 4 hour chef) and break it down to little tasks or skillset.
2) Learn enough to self-correct - thru at least 3 different sources either thru the best books/courses/video available on the subject. Do not read too many books and move on to put what you learn from these 3 sources into practise. People usually procrastinate by saying "i will start doing once i read another 3 books and so on and so forth".
3) Remove practise barriers - Be focus on the subject and not be distracted by whatever gets you distracted daily.
4) Practise at least 20 hours - Pre-commit 20 hours to overcome the initial fustration barrier or fear of failure.