I'm wanting to print a 300 DPI brochure, but my first attempt at making it fell short of the proper resolution, so I am having to remake it. I've already printed my business cards, which were 1125x675 at 300 DPI, and they have the same picture on it that I want in the brochure.
I was thinking about the different ways to get the brochure the correct resolution (remaking it completely or just resizing it,) but I noticed that the picture wasn't quite the same. It's comprised of 12-15 layers that are difficult to replicate because I made a lot of level, saturation, etc. adjustments.
I decided then to simply remake it, importing the business card's picture as a layer to use as a reference for what my end result should look like. I pasted in the flattened picture from my business card and then resized the layer... from 1125x675 to 2245x1347 (nearly twice the size)... and much to my surprise, it looks just fine, so I'm contemplating just going with that resized picture.
Is this generally considered acceptable practice, or is it at least acceptable in this case since it still looks good?
Here's what the resized image looks like (upper-left corner) : http://www.solarcoordinates.com/images/brochure1_interior_5_spacing.png