Acabei de concluir o método PIC PAF :
PIC PAF significa: P icture I n C apresentando P imagem A s F rame
Isso é como o método funciona:
Go to Insert -> Pictures and choose your Picture
Instead of choosing "insert" you choose "link to file"
Then you insert the picture that will be inside the frame.
Change the layout of the inside picture to "in front of text"
Now you can just drag and drop the picture inside the frame and there you have it!