Below is the step how to add information to the sidebar of prestashop based website, in this tutorial: payment information.
Step 1 : Login to Cpanel
Step 2 : Click File Manager
Step 3 : Click Go
Step 4 : Click Icon New Folder
Step 5 : Click Images Folder
Step 6 : Click Icon Upload to upload logo
Step 7 : Browse Logo location (logo size 150 x 50)
File in folder image after upload location /images/
Step 8 : go to folder /public_html/modules
Step 9 : click folder blockpaymentlogo
Step 10 :Tick file blockpaymentlogo.tpl —> click icon code Editor
Step 10 : Edit Code
only needed edit the html code
<! – - code –> = Lines are not in execution
<br /> = line breaks
<img src=”/images/bca.gif” alt=”BCA” /> = image location
alt = provide information to Image
Step 11 : Save Change