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.
Back in the ‘90s, Clip Art took over Word and PowerPoint files thanks to the thousands of office workers and students who used the images as a way to “improve” their documents. These days there are a large number of free images available on the web, and Microsoft is recognizing this by killing off its Clip Art portal in recent versions Word, PowerPoint, and Outlook. “The Office.com Clip Art and image library has closed shop,” explains Microsoft’s Doug Thomas. “Usage of Office’s image library has been declining year-to-year as customers rely more on search engines.”
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.
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 .
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 . 

oh ya I used to use clip art all the time and I just loved clip art even though a lot of the art was cheesy, but you could definitely find what you needed or close to it. I just tried using the clip art on the new system and because I have a mac its harder to use. I'm having a hard time figuring out how to resize it put it behind text all that. I wish they would bring it back
My school district doesn't allow students to access anything except Google; therefore, clipart is useless. More and more school districts and companies are blocking applications and websites to prevent access to inappropriate images and content. My first and second graders have always loved doing PowerPoints; however, with clipart no longer working, they cannot do these projects any longer. Older students access Google images to get graphics for their projects. 

My school district doesn't allow students to access anything except Google; therefore, clipart is useless. More and more school districts and companies are blocking applications and websites to prevent access to inappropriate images and content. My first and second graders have always loved doing PowerPoints; however, with clipart no longer working, they cannot do these projects any longer. Older students access Google images to get graphics for their projects.
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