• Select the   for the photo you want to delete.
• Confirm you wish to delete the photo.

Select the image editor for the photo

1. Select the Crop under the edit tools menu.
2. Draw a crop box to select the area of the photo to keep.
3. Select OK.

When you are done editing the save the photo.

After you create an account and log in.

1. Select the Add Photo button in Photos
2. Give your photo a name
3. Select the Choose File and select your photo with the systems file browser.
4. Press Save

Allowed types: png jpeg jpg jpe gif. 20 MB limit.

Your photo can be a png, gif, jpeg, or jpg file.

Specify the size when digitizing; if needed, the system scales the photo to the digitizing size at 254dpi (100ppc) or scale your photo with your photo editor of choice at 254dpi (100ppc) to the size needed before upload.

1. Select the location on the photo to start the flood.
2. Set the tolerance
3. Select Flood

Fully transparent pixels do not get filled. Semi-transparent pixels get filled at a lower density.

Remove the photo parts you don't want to be in your design by making them transparent in your photo.

How do I make parts of the photo I don't want transparent?

This site has simple editing tools, and If the parts of your photo you want to remove are a solid color, you can use a flood eraser or color eraser tools to remove areas. If the area is more complex, you would need to use a photo editor like GIMP(free), Photoshop(subscription), or Pixlr(free) to remove the parts you don’t want 

A web search will provide more programs and instructions on removing backgrounds from images and saving them as transparent png files.

Resources:

removebg - Remove Image Backgrounds automatically

GIMP - GNU Image Manipulation Program

Pixlr - Online Photo Editor

1. Select the Color Eraser tool
2. Select the image to pick a color
3. Set the Tolerance
4. Press Remove Color