Here are the steps you have to follow in order to add the badge to your Facebook and Twitter profiles:
1. Save the images
2. Open a PowerPoint Document
3. Insert your current Social media picture to PowerPoint (Insert --> Picture)
4. Once you have the picture there, insert the badge in the same way (Insert -->Picture)
Adjust the dimension and place it where it fits better.
5. Save the document as a picture by pressing File --> Save As --> Choose .png or .jpeg -->Current slide only
6. Add this new picture to your social media profiles.