Step 2 - Tap the template you want to use.
Step 3 - Go to the Upload option.
Step 4 - Tap on the Upload Media option and select the image you want to insert.
Step 5 - And then the image will come on the Artboard.
Or here is another way to upload the image.
Step 1 - Click on the "upload media" button
Step 2 - Drag the photo to the upload section.
Now, you have successfully Added an Image On Muse.