How to create a child theme in wordpress?

1. Create a directory in your themes directory to hold the child theme. The theme directory is wp-content/themes. You should name the directory without any space as part of the name, and it is common practice to use the name of the parent theme folder with “-child” appended to it. For example, if you are making a child of the twentythirteen theme, your folder name would be twentythirteen-child.
2. In the child theme directory, create a file called style.css. This is the only file required to make a child theme. The style sheet must start with the following lines:

    /*      Theme Name:     Twenty Thirteen Child

             Theme URI:        http://example.com/twenty-thirteen-child/

             Description:        Twenty Thirteen Child Theme

             Author:                Sheetal

            Author URI:         http://example.com

            Template:            twentythirteen

            Version:              1.0.0

           */
                  @import url("../twentythirteen/style.css");

           /* =Theme customization starts here

            -------------------------------------------------------------- */