i want to participate in the pet trait design contest, but im planning on pasting the pet images to a word document, then printing it out, drawing my design, then trying to upload it on a photo. i just dont know how to upload a real photo to a thread post. is there anybody who could possibly please help? and if possible please, tell me how to do it on a mobile phone? ( that is most likely how ill be submitting my design. thank you to everyone who helps. id love to submit my own design. thanks!

You use a website like Imgur or Photobucket. If you have a discord, you could upload them into a private channel and use the link that makes.
basically, you just use an image uploading service