How many years of training do you have?
I've been training in the martial arts for over 20. Maybe I'm just dumb as a rock, because I have found that I cannot reliably learn new skills solely from a video and get them right. I can't even learn them well enough to take them to someone to put the polish on them...
Too many errors creep in, no matter how many times and how carefully I review the videos.
I can combine books and video (when properly designed to do so), and get closer -- but it's still not the same thing at all.
I've seen people demonstrate skills I know after they "learned" them from video. Out of maybe 100 examples... I've seen about 3 that weren't missing major elements that a live teacher could have corrected, if one had been present, long before they got cemented into bad habits.
My teacher taught me that it's much harder to unlearn something than to learn it correctly in the first place.
Keep training. Keep working... but, even more importantly -- find a live instructor to work with. Even if you can only do so once a week or once a month... In early stages of training, you need more personal, hands on correction. As you advance, the need is reduced, but not eliminated. I rely on my training partners as well as visits with my teacher and other seniors to maintain and develop... even after 20+ years.