Plz check my site :http://www.quintin.com.cn/store/headwear/ . The thumbnails are blurry. But I have checked the config.php of woocommerce-config folder.
//product thumbnails
$avia_config['imgSize']['shop_thumbnail'] = array('width'=>80, 'height'=>80);
$avia_config['imgSize']['shop_catalog'] = array('width'=>300, 'height'=>300);
$avia_config['imgSize']['shop_single'] = array('width'=>450, 'height'=>450);
avia_backend_add_thumbnail_size($avia_config);
Could you help me solve the problem? Thx!
Create a new thread and tell me what problems you are encountering and what you want to know. 
There is no step 3 :) 
