Follow below mention steps to add image as a design background :
Step 1 : Go to Appy Pie Design
Step 2 : If you have an account login to your account, else create an account
Step 3 : Create or open an existing design/project
Step 4 : Go to the “Background” tab present on the editor’s side panel
Step 5 : Click On Upload background
Step 6 : Upload an image from your device and click on open
Step 5 : : Your selected image will be applied on the design, you can also undo and redo changes , by clicking on the arrow pointing to the present next tool
to preview icon on editor’s bottom tool band