The caucasian person in the photo does not have a monolid. They simply have a crease which is hidden by the heavy fold of skin on top. True monolids are most common in asian patients. If you are in fact similar to the photo, you can still have an upper eyelid lift to remove some skin but not too...
Don't waste your money and psychic energy chasing after it. I do think that your upper eyelid fold could be improved by tightening slightly the upper eyelid platform skin and orbicularis oculi muscle to smooth this skin. Please be careful what you look for out there. Ultimately there is no...