If you mean your own artwork, then you'd take a picture of it, upload it to your computer (make sure you know where you're saving it), then select Insert > Picture in Word, browse in the location where you saved the photo, click the picture, and insert. If you mean an image from the internet or something, you can just save it to your computer and basically follow the rest of the steps above.
As an artist I resent some people's assumption that original art from my abilities and imagination, which I have sacrificed a lot to develop, should somehow default to public property. If we require artists to participate in a money economy their art belongs to them. Copying images and not following the copyright owners permissions to the letter is stealing, outright. And deep pockets like Disney has taught individuals that the hard way.
My colleague Chris compared Google Image search to Bing Bing Images vs. Google Images - Which Has Better Results? Bing Images vs. Google Images - Which Has Better Results? Bing’s image search once challenged Google, offering more features and a better design. With infinite scrolling and the ability to search for similar images, Bing was legitimately better than Google at image search just a... Read More , and found Google’s results to be better. If you feel the same way, don’t worry: you can use it to find rights-cleared images. While searching for an image, click Search Tools then Usage Rights.
There it was, inside the program you were already using. Sure, it wasn’t pretty, but you could quickly add a visual highlight to your document or presentation. Even better: everything was rights-cleared, meaning you could use it in your document or PowerPoint presentation without the fear of legal repercussions Confused About Copyright Law? These Online Resources Can Help Confused About Copyright Law? These Online Resources Can Help It's a confusing subject, yes, but it's important that you wrap your head around it. If you're involved in any sort of creative work, these resources will help you do just that. Read More .
This is TERRIBLE! Besides being able to edit vector images like Will mentioned (which is important for those of us who don't have graphic artists available to create custom images or the budget or time to buy that service ad hoc), you could also search for style "families" (different graphics that were all in the same style). There was a huge range of files and styles in the collection and it was much faster to find what you need than to do a Bing search. Plus, you knew that everything there was free and free to use, without having to worry about CC license issues.