We have an existing plug-in that is used to overlay watermark images on some pictures, we need to modify it to overlay any image that will be uploaded by a designer on predefined product images that we have. (Tshirts and Mugs for now) . For example you upload an Apple, the plug-in will generate mock-ups for 5 blank t shirts with an Apple image on them.
The idea is simple merge of the design with the product template image and nothing 3D.
Second product to overlay the design on a mug
I am attaching an example of the output so this attached image resulted from merging a png image with transparent background with another template image that we have from the t shirt
This existing plugin already do something like this but it is not in the same way that we want it
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please write blue in your proposal to make sure you read will the end and let me know the expected number of hours
you may start by doing modification or take part of the watermark and customize it for our requirement