Photoshop - Adding a border

[Martynt74]

Hi

I've got 2 pictures at the moment that i want to get printed onto a canvas. However when making the images i've not factored in the canvas wrapping around the edges (38mm each side)

How can i add on an extra bit to a psd file (or a picture) to allow for this and not have it affect the total size of the picture or mess up the aspect ratio.

I'm a bit useless on photoshop so simple guides would be helpful

Cheers
Martyn

 

[Martynt74]

Paul - I’m planning on having a table plan printed for our wedding (see below) as such if anything is wrapped around the edges it will look odd and probably miss off some names etc, so I just want to put an ivory border around it so that the image on the front on the canvas matches what is shown below.

I’ve not really got a printer sorted yet but I was planning to just use one of the many online based companies to do it. It’s the latter I want to do (add a 1/4inch around the image in plain ivory to match the background of the image) I’m just not sure how to go about it

Heres a smaller version of the tableplan