Learning to isolate and clip can be daunting. Continue to follow high end retoucher, Sef McCullough, as he establishes clean workflow and best practices in complex workflows. With a library of paths set up, learn a method called tiered masking. Learn a different method, using pixel layers to eliminate errors that can occur with mask edges. Develop a thorough method of organization and continue to use Smart Objects, to harness the power of a non-destructive workflow.