As I was perusing the various pics, I spotted some that captured my interest. Whether it was the character, the background, or the color, I kept thinking, "Hmmm, this could be a story." Despite the fact I already had a decent grasp of my current characters, downloading some pics allowed me to study them a bit closer. During my inspection, characteristics began formulating as I sat in observation. The color of the artwork, the facial expression, the armor/clothing being worn all came into play in feeding more detailed ideas into my mind.
One thing I learned in high school and college was a unique study format that allowed me to comprehend things very quickly. I would read my notes/text and formulate my own test questions. On an index card, I would number them and write 4-5 questions on one side with the numbered answers on the back. As I wrote the questions, I used as many of my senses in the process: reading, hearing, seeing, writing. Doing so allowed things to sink in quicker. The same principle applies in using a pic with other mediums. For example, have appropriate music in the background, or have a related movie playing nearby. Even "mood" lighting can come into play. Utilizing all these factors, along with your imagination, can enhance your ability in creating that special character for your next success story.
In relation to the pics, you can also create files specific for a particular novel you are working on, or gather pics under a specific type: villain, knight, cleric, detective, priest, etc.
Good luck! Take care, Nick G. Giannaras