Working as a marketer almost always often involves designing marketing pieces.
So here are the 3 crimes you would want to avoid:
#1. Distorting the image
Turning a rectangular image into a square just so it fits nicely in the layout (& vice versa)
#2. Using low-resolution image
..because it takes a ton of time trying to find the right image that has the right resolution.
Quick tip if you’ve run out of image options: Adobe now has a feature to enhance the resolution of your low-quality images.
#3. Using more than 3 typefaces in a single document/artwork
Yes, it’s so tempting to try a ton of fonts installed on your computer. That doesn’t mean you want to try everything.
It’s best to keep it to 2-3 typefaces.