To open an image in PicMonkey, there are a few methods to get your pics into the editor.
1. Select "Create New" in the top left of the homepage or editor
The screen below it will launch -- choose from where you'd like to open your image. After you've opened your project, you'll also be able to rename it on the Top toolbar.
2. Drag and drop on the homepage
If you're on the homepage, you can just drag and drop an image from your desktop to get started (not all browsers support this however).
3. Add an image to your canvas
4. Add uploaded photos to your design
When you add an image to a template or blank canvas directly from your computer, it will first appear in the uploaded section of your Photos tab. Then, just drag and drop it onto your design where desired.
For adding an image as a layer, see Adding an image as a Graphic