Use https://www.photopea.com/
Create a new document
Web Desktop > Size > Small 1024×768
Use google to find 3 images of animals, clothing, food, etc. (anything you want)
Just make sure the images have organic curves.
Import the images to Photopea
Use the Pen tool to trace the 3 objects.
Use the Pen tool to create neat curves.
Use Gradient or Solid colors to fill the 3 objects.
Add stroke colors if you like.
Arrange your completed traced objects below your original images.
Export a PNG version of your image and Upload here