How do I find my pending photos on facebook?

So I play this game Flutter on facebook and I take pictures from there to show my flutter friends my grove. I was able to accept the pending photos when I had 2 or more game requests, but now I have none and I can't find my pending photos from flutter. Where can I find them? I have looked EVERY where and I can't find anything on facebook help. Which isn't HELPFUL!!! So PLEASE help!