1. Have artisan create php template.
   • Artisan is a php script itself so you must run this from the directory where artisan lives (the root directory for the project.
   • Artisan knows how to fill out the template based on the name you give it. Example command: php artisan make:migration add_new_fields_to_users_table will tell Artisan to base the template off the users table
2. in database/migrations you'll find the file you created. Edit the template using other migrations as a model for what you want
3. to run the migration: php artisan migrate

Reference