[kinoseo]

Well.. i solved. if any body needs, this is a Shortcode for this, put in functions.php

// how to show avatar with shortcode --> [DASH_avatar]
add_shortcode( 'DASH_avatar', 'DASH_avatar_func' );
function DASH_avatar_func() {
  $current_user = wp_get_current_user();
  $html .=  $current_user->user_login;
  $html .=  get_avatar( $current_user->user_email, 32 );
  return $html;
}