To fully answer this question I would have to know what your difinition of 'anime skills' is.
If you mean general knowledge about a variety of anime and their content or anime terminology then i suggest you watch alot of anime or look at anime related sites.
If you mean your drawing skills then i suggest you either purchase or borrow some 'how to draw manga' books. There are plenty out there however some of them are trash so i suggest you get a good one.
I really don't know what it is that you are after but I hope these helped... XD
You can improve your selling skills by so many ways. I would improve your selling skills by giving you selling skills books to read.
yes, but it depend on what you watch for example you can learn about confidence and self improvement from some anime like baka to test shoukajyuu and it also relieve stress. If you want to be a doctor you can even learn from the anime the blackjack or anime like Ray which are all stuff on doctor and pharmacy. It can also be used to improve your Japanese learning skills.
You should improve your investigative and evaluation skills
mainly graphic art. but it's good to do fine art as well. it will help improve your art skills and help you work on creating your own art style, also try different cartooning styles not just anime. play around with your characters and have fun doing different things then go back and draw your anime characters again and see how your style and art improve.
The ability to animate and video editing skills.
I wouldn't think so...but they improve mental skills
no
And how else do you expect to improve your math skills, if not by studying???And how else do you expect to improve your math skills, if not by studying???And how else do you expect to improve your math skills, if not by studying???And how else do you expect to improve your math skills, if not by studying???
you can improve it by reading book that inretest you.
yes, you can improve on everything
Yes it does. That is why physios get injured people to improve their motor skills by repeated practise.
to improve our skills,and good communication skills.