Need help getting this image right on ES

Hello everyone, I am currently customizing people suggest module from techjoomla. I changed the avatar image to a bigger size which made the image quality very poor. I requested help from the guys at techjoomla weeks ago and I got no answer. This line of code

 <?php echo $uimage; ?>

is what I am having trouble with.. Any ideas on how to make the image quality better?

Thanks for your help