Mirrow Tool Causing Heads-Up Message

[A_New_View]

Hi. While designing a wedding envelope, when I clicked on the "Mirror-Image" tool, I get a message saying, "Heads-up! Image is too close to border and might get cut off!" The problem is that the image is in the center of the design, and quite small, so it is not close to edge at all. However, when I click the mirror-image tool, it becomes that way - as it should. I don't understand the reason for the heads-up message. I have used this tool many times before and have never had this issue. If I ignore it, will a potential customer see this warning? How can I enable the mirror-image tool without getting the heads-up message? Any help would be greatly appreciated.

[A_New_View]

Correction, the title should read, "Mirror Tool." That was a typo.

[Sara_H · Accepted solution]

@A_New_View 

It's not just the mirror tool that gives the heads up message. Any tile option does.

It has been requested that the pattern options work for envelopes. Not sure when this will be implemented (if ever)

https://community.zazzle.com/t5/ideas-suggestions/please-allow-us-to-use-tiling-inside-envelopes/idi...

If your artwork overlaps the safe area - you'll get that warning and according this post - customers will see the warning too

 https://community.zazzle.com/t5/creator-news/text-amp-border-warnings-on-cyo-products/ba-p/141426

tldr - you can't use the mirror image for envelopes (imho)