Orange results usually come from over-application on dry areas (hands, elbows, knees, ankles) plus inadequate prep. Fix: exfoliate 24 hours before, moisturize dry zones before application, use less product on joints, follow the recommended develop time, and build gradually rather than going maximum shade on your first try. Alternatively, using products that alter skin PH (ex: bar soap) could be the reason why your tan is turning orange.