We can do Neck joint using different Photoshop technic channel masking is one of them.
Here Offshore Clipping Path presents you a full tutorial of how to create Nick joint using channel masking technique on your product or e-commerce images with Photoshop.
Please watch the full video to understand the tutorial properly. Besides, If you have any question regarding the matter then please leave a comment below. We would be more than happy to answer your questions.
To know more about Neck joint please visit this link: https://www.offshoreclippingpath.com/neck-joint-services/