We see here the original image -

In the top-right circle, the wall behind the glasses clearly does not match the rest of the wall in the photo. Below the glasses is simply a sloppy copy-and-paste job.
In the top-left circle you see a crappy and sloppy job with the ear.
In the bottom-right circle you see the reflection of a human face rather than of a monkey.

In this pic you see the first two of the main problems fixed. I imitated the wall behind the glasses by copying a small portion of the visible wall right next to where it is behind the glasses and applied a few filters to make it look realistic. I imitated nearby colors in the ear and removed the black around the edges. On the top of the monkey head I did a simple blur filter to make it look smoother. I also fixed the problem below the glasses.

In this pic I've added a reflection of the monkey on the tuba, rather than of a person. Admittedly, I could've done a better job with this, but this is what turned out in the five minutes I spent on this.

Feel free to replace it
