OK, so while the white patch dissappears, so does the highlight areas of the model. Merge this set of model and beach multiplied layers into one. Now this next step requires skill, so practise with your mouse or stylus to get a nice control of freehand movement. Thats how the pros do it. Countless hours of masking, with differnt brush sizes. There is no shortcut for perfection! Anyway, select the eraser tool and simply erase the affected areas of the model to reveal the clear image of the model below. Use large brush sizes to cover large areas and smaller for small areas. Also, make selection with lasso tool and then erase tricky areas. Notice how the final erased layer looks in the screen shot below.
Once when you are sure there are no more corrections, merge all the top 3 layers. By now, you already have the final product. But lets spice it up a bit. Select lighting effects from Filter>Render>Lighting Effects and select Omni lighting. Make the area of the circle big and slect the light color to sea green like shown. The color should be from the pallete of your image. You can try other colors too, just for kicks. Use the intensity slider to control the brightness of the light. Be careful not to burn the image. Pressing Ok, will add a nice vignette in the image. The importance of this step is that it makes the composite look seamless and directs the eye to the subject first.