Discuss with your employer
You must discuss the terms with your current employer and see whether your current company can give you the option of working from home or not. If they give you the required option, it is good otherwise you must search for another company.
Determine your skill level
You need to determine what your skill level is. This includes the tasks you can complete on your own at home on a daily basis. List down the skills you have and look for companies that can best utilize your skill level.
Search for a company that offers this job
This is probably the most important step. You must look for jobs that can best use you as an option. Look for companies that offer a job to work from home and has a nice name in the market. If the company is renowned and has considerable experience in the market it is operating, apply for the job.
Prepare a resume
Your resume must include each and every skill set so that you have an upper hand over some other candidates that have applied for the job. Change the skills or tasks you are able to perform in accordance with the job you are applying.
Setup the office at home
You need to setup an area at home that can be used solely for office work. There should be no disturbances in the area as you need to take your work seriously.