1. Be versatile
A good blogger can write about almost anything under the sun, from beauty, technology, food, travel, electronics, books, politics, movies, daily journals, and many more. Writing about different things exposes you to a variety of words, and you can add those new words to your vocabulary, which later on will help you to write blogs professionally as you will be able to put your thoughts into words more efficiently.
2. Be consistent
Make writing blogs your habit. Keep working on new content different from what you did last time. I am not telling you to write a new blog every day but rather add something new every day in the blog your working on. Writing blogs should become an inveterate habit for you. The more you write the more confident you'll get and your typing speed will improve too.
3. Do in-depth research
Nobody wants to read stuff that is not well-researched. Do research, think as if you are writing for an international journal. A well-researched blog will keep the reader focused on what he's reading. Don't write a blog without research as it will not make much sense to your viewers who have some former knowledge about the topic you have written.
4. Try to write SEO (Search Engine Optimization) friendly blogs
Every time someone searches something on the internet they use keywords to find it, and it the job of the search engine to give them the most relevant information, and hence it will look for pages that have the same keywords. An SEO friendly blog will attract more traffic to your site, and your website will be ranked higher in the search engine. You can use the tools Google Keyword Planner to look for better keywords. Incorporate those keywords in your heading and first paragraph of your blog.
5. Use tools to improve the visibility your content
There are many tools to make your content look more appealing and for increasing the readability of your content. Grammarly can find misspellings in your content and can correct them. Google has a policy to avoid plagiarism or copied content. If found any, it will not show the copied content in the search. Plagiarism Checker can determine whether you have, by mistake, copied your content or not. Word Counter can count the number of words in your content. All of the tools mentioned above are free of cost.