Recycling/upcycling thrift store painting

I think this concept is based on a wonderful idea: adding monsters or funny characters to paintings that inspires no interest for most of us.
I must admit, you have to be gifted to do that, but at the end, this is a really fun project that could end up in kids bedroom instead of a trash.
This is some painting made by Chris Mc Mahon

 

A different style, made by Thyrza with prints available here on Etsy:

This is really inspiring, and I'm reading to go to thrift store and get my own painting to give it a try!