Genesis Theme custom template

Would appreciate help in creating my custom template so that CustomPress works with Genesis theme. This is what I created, however, I really do not know php

<?php
/**
* Single CPT Template: plant-template.php
*
*/ 

remove_action('genesis_loop', 'genesis_do_loop');

add_action('genesis_loop', 'gt_custom_loop');
function gt_custom_loop() {

 <?php echo do_shortcode('[tax id="plant_type" before="your text before " separator=", " after=" your text after"]');  ?>

}

genesis();