Would a Chin Implant Make Me Look More Masculine? (photo)

From your profile picture, it does appear that you would be a candidate for chin augmentation.  This should help to balance your face better.  In regards to creating a cleft in the chin, in my experience, the surgically created clefts never look as good as the natural ones.  My recommendation would be to skip the cleft and just go with the chin implant.  

A wide variety of facial implants are currently available for the enhancement of the skeletal elements of facial aesthetics. The most commonly used facial implants are used to enhance the profile of the chin and the cheeks. Facial implants very widely not only in shape and style, but also in terms of the materials from which they are fabricated.

My preference is to use structural fat grafting, as much as possible, to enhance facial features. In many cases, the need for a solid implant can be eliminated by the careful and meticulous grafting of a patient's own fat. While the incidence of complications with facial implants is not high, certain problems may develop which require implant removal including infection and implant migration. Bone resorption (bone loss) has also been reported below solid facial implants. Neither of these problems are an issue with structural fat grafting.

The only setting in which I currently use a solid facial implant is for chin implant augmentation. Some patients with a 'weak' chin profile can be adequately improved by structural fat grafting alone. However, when the chin protrusion needs to be enhanced by a half centimeter or more, a chin implant is absolutely required. I prefer to use a soft, flexible, anatomic chin implant that conservatively enhances the anterior projection of the chin in profile. The chin implant is placed through an incision hidden underneath the chin, an area where many people already have a scar from a fall in childhood.

Moderate enhancement of chin projection in appropriate patients can dramatically enhance the profile, in a manner that is completely natural-appearing. It is remarkable how increasing chin prominence in some patients will reduce the apparent prominence of the nose, and restore an overall sense of harmony and balance to facial features.