Create Custom WordPress login form without plugin [ WordPress Login form Shortcode ]

create_wordpress_login_form_shortcode.php

<?php 
/**
 * Code to Create Custom WordPress login form without plugin 
 * @author Joe Njenga 
 * @ gist  - 
 */ 


// Step 1: Create shortcode
function njengah_add_login_shortcode() {
  
	add_shortcode( 'jay-login-form', 'njengah_login_form_shortcode' );
  
}

//Step 2: Shortcode callback
function njengah_login_form_shortcode() {
	
	if (is_user_logged_in())
		
		return '<p>Welcome. You are logged in!</p>'; ?> 
		
		<div class ="njengah-login-tutorial" >  
		
			<?php  return wp_login_form( 
							array( 
								'echo' => false ,
								'label_username' => __( 'Your Username ' ),
								'label_password' => __( 'Your Password' ),
								'label_remember' => __( 'Remember Me' )
			              )
			); ?> 
		
		</div>
  <?php 
   }

// Step 3 : Init the shortcode function
add_action( 'init', 'njengah_add_login_shortcode' );

//Step 4 : Use the shortcode [njengah-login-form] to embed the login form on a page or post 

Please correct Step 4.
Use the shortcode [jay-login-form]