If you want to improve something, anything you should start blogging.
There are so many disciplines that benefit from blogging. Creative disciplines can greatly be improved. When you blog, you create something. If you blog everyday, you create something everyday. Creating something everyday is key to improving.
Back when I was a guitar teacher I told students to practice 15 minutes a day everyday. It was better than playing 30 minutes every other day. The students that practiced everyday got better. It is a very simple and effective way to get better.
If you blog everyday and producing something it can help you get better. The more your produce the better you get. Actually, the improvement happens in between projects. What happens is that you produce something and then you figure out what you can do better. The more you do this process the better you get at whatever you want to do.
If you want to become a creative writer then write a paragraph everyday
If you want to become a good illustrator then draw everyday
Want to learn how to use Photoshop then produce something everyday
Want to learn Illustrator then draw something everyday
If you want to get better at photography the take a picture and upload it everyday
If you want to make games, then make a small game everyday
If you want to make websites, make a small website everyday
There is another benefit to blogging everyday. You get in the habit of getting things done. This is something I had to learn and it was hard. I one summer in University I spent 12 hours creating. All day everyday. This lead to my first entrepreneurial product: 17 educational books.
After that I was ready and able to create more. If you want to create spend your entire day creating. You especially need to do this if want to do it for a living.
How do create a blog? Simply go do blogger.com and create a blog. It takes about 10 minutes to setup. After that star blogging an blog away!