The only "problem" I see that will prevent you from the look in the photoshopped pic is that in the photoshopped pic, your temple hair is darker, so the corner of where your temple hair meets the piece blends better. If your temple hair is thin/light then it will be dramatic where the temple hair meets the dark piece hair.

You could use something like Dermatch to color in the temple hair to help with the blending, if this becomes an issue, though.