Yes, you can certainly make your own ads! Once you have ads that you would like to use, you will need to upload them into the system. The size of the Banner Ad must be 300x250 pixels, and the Mobile Banner Ad must be 320x50 pixels. Please keep in mind that Facebook advertising policy prevents us from using any personal images on the Facebook ad.
Click on the Build and edit my ads tile on your dashboard:
Then, underneath Comments on the Ad Manager page, click Add Comment or File
A box will appear in the center of your screen. Click Select underneath Attach a file
A new box will appear. You can drag and drop your file into the space underneath Upload a new file, or you can browse your computer for the file by clicking on Browse… Once you have your desired file, click Next.
You should see your file in a preview format underneath Attach a file. Then, click Save & Close.
Your ad has now been uploaded to your Producer. If you have more than one ad to upload, simply repeat this process. Your Producer will upload your provided ads and reach back out to you for approval within one business day.