Overlay PNG logo

Hi,
Today I install your wordpress plugin on my website. I like to Overlay PNG logo. But it was appear on center of thumbnail. But I like to do it footer of thumbnail which you include there – https://www.flickr.com/photos/wonderm00n/29890263040/in/dateposted-public/
There is another live example: https://www.thedailystar.net/world/rohingya-crisis/united-nations-experts-condemn-persecution-rohingya-people-ask-suu-kyi-visit-coxs-bazar-1468006

Please help me.
Thanks in advance.

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