I feel like my skin graft isn't healing properly? (photo)

4 months ago I had a sebaceous nevus under my eye, that had turned into skin cancer. I had mohs surgery followed by a skin graft on my face. It's been about 4 months, and the skin graft is still very red, and it almost looks irritated. The skin and the area around where the stitches have been removed are both very thick and noticeable. Is this normal? Will it go away? I've been using silicone sheets as well as scar cream, and there seems to be no improvement.