How do I crop my photo?'s crop tool can be found by clicking the photo that needs to be cropped and then clicking the button that looks like an overlapping box that appears above the selected photo.

This will open the crop feature. Use the white bars on the edges of the photo to drag in and out for cropping and then click  when it is cropped as desired.

You can easily undo cropping here by reselecting the cropped photo and then adjusting the bars back to their original position.