Here’s a nifty site that lets you create your own warning label in just 4 steps:
Step #1: Choose a warning label
Step #2: Choose a warning symbol
Step #3: Type in your warning message (You have 6 lines!)
Step #4: Click this button (Reads “Generate Warning Label”)

The end result’s exported as a JPEG file so it’s ready to be saved on your computer or posted on your website.

Visit the Warning Label Generator here.