Can someone add a white border around these 3 photos?

[techfestlunch&dinner]

SO im making posters out of these in a frame 23 x 33

but Staples only prints posters 24 by 36.

So if i add a white border thats 3 inches horizontally ONLY (no vertical border), i can cut it without losing some of the picture.

can someone easily photoshop that maybe? it would help alot!

oh and the third photo is 8mb and it wouldnt let me upload it so here the third:

https://www.flickr.com/photos/24140175@N02/20103419196/in/dateposted-public/

 

[Gav2k]

Do you have a Costco near by?

 

[techfestlunch&dinner]

Do you have a Costco near by?

not in my cityy they do posters?

 

[Gav2k]

They do mate. The online site is temporarily down but once it's back up you can order for delivery. They will also do the boarders for you

 

[techfestlunch&dinner]

They do mate. The online site is temporarily down but once it's back up you can order for delivery. They will also do the boarders for you

where do you recomend a good frame?

 

[Gav2k]

They do the frame also