Yes. We encourage you to add your own image with each lesson. If you do not have an image, your lesson will populate with one of our images. If you do add your own image, add a caption to site the source. And make sure it’s either an open source image, public domain image or one you have the rights to share online on Share My Lesson. Read more about the Terms of Service here. https://sharemylesson.com/terms-of-service
While you are solely responsible for any images you choose to upload, here are some sites you may want to check out for free images.