Top Tip #3: Choose by aspect
FIND THE ASPECT THAT FITS YOUR SPACE
It's all too tempting to want a panoramic print to fill a big space. The problem is, unless you can find a really large format print of 150cm or more, you're unlikely to fill the space adequately. Instead you compromise with a panoramic print that is smaller and leave too much white space above and below. Not to mention the cost! Instead, consider your options. Like the image on the left, a large rectangular 100cm x 65cm print,, once mounted and framed fills a large wall space and dominates the room. The sofa, lamp and table, bring your focus back to the picture. You barely notice the white space to the left and right of the picture. Simplicity is key. Remember too, that most print dimensions are the print size, not the framed size. Again you can add another 10-20 cm on each axis once it's framed. (note, that if you buy a canvas stretched or frameless print like an acrylic or metal mount image, then the print size is also the frame size. )
Lastly, ask the photographer if you can't find the aspect you like but you found your dream picture. Most photographers will be more than happy to crop an image to the aspect you want, as long as the image works in that new aspect. occasionally some don't. Just note: it's the photographers prerogative to say no to your very lovely request. Don't be offended if they say no. Remember we're all temperamental artists at heart.