Using External Flash for the first time

For this lab, we were tasked with using the external flash for the first time. An external flash is an attachment tool to the camera which produces a brighter and more diverse effect on the subject of the camera. When using the external flash I found that it was able to capture the subject in a more appropriately darker setting. We were able to achieve beautiful clarity in the darkest of rooms and even acquire shadow behind the subject.
In this first image, there are two shared subjects the rest of the image is left in darkness to highlight the subjects.

In this next image, we have the subject's features highlighted by the flash, which outlines every detail of her features.

In this image, we were able to get a shot of the subject in a professional studio and I captured a picture of the subject against a white backdrop. This allowed me to see the shadows that fell against the backdrop and the outline of the figure. The external flash highlighted along with the features that were closer to the light such as the cheekbones and darkened the ruffles of her shirt.