how to add a logo to coffee cup in photoshop?

Open the image.

Select the 'Subject' option from the 'Select' menu.

Press 'Ctrl. & J' to duplicate layer.

Paste the logo image on the cup.

Duplicate layer taken above the logo layer.

Select  the 'Darken'  option from the blending mode for duplicate layer.

Select  the 'Multiply'  option from the blending mode for logo layer.

A logo will be added to the coffee cup.

Please distribute the website link among your friends and various groups.