Increase Upload file limit size using htaccess

1. Create/Edit your .htaccess file
2. Paste below code

php_value upload_max_filesize 20M
php_value post_max_size 20M
php_value max_execution_time 200
php_value max_input_time 200

3. Save
Example above allow you to upload up to 20MB.
You can change it as you want..