There are many cool ways to get an idea across to someone else, but they don't all work as planned. Many amateurs who make flyers and signs will pack their signs with information that can't be read unless people care enough to stop.
Spoiler alert, they don't.
To get you information into the minds of passersby simply with a glance, here are a few pitfalls to avoid and design pointers for window signs and other advertisements.
It Has To Look Good And Work
Everyone has their own idea of what looks good. It's one of the many things that makes life unique and refreshing, but being objectively good doesn't make it legible.
Consider clubs, churches, or parties that pass flyers out to people. Too often, the designer will have a page crammed with text and some sort of graphics. The text may be in one huge brick, or strewn across the page in ways that don't make sense.
You don't have to be perfect in design, but there are some things that are just wrong. Don't give people a page of text if you don't already know they're interested in reading it. You could be revealing the cure to cancer or the secret to immortality and it's bound to be ignored by a lot of people just because the words are too dense.
Before thinking about aesthetics, think about white space and focus. White space simply means area of a document that lack text and graphics, which give the eyes a visual cue of where to stop or skip. Information that is spread out is less daunting and looks like less of a chore to read.
That doesn't mean you can just throw snippets all over the advertisement. Especially in window graphics, the eyes need somewhere to start. If there are too many possible areas to start--even if you surround different words with explosions or dollar signs--people may just dismiss it as another cheap sign and move on.
The key isn't just to get their attention. It's to throw the information into their heads when they glance at all, so whether or not they want to read the information, something gets there.
Professional Sign Designers Can Install What You Need
There are lectures and years of knowledge behind how the human mind thinks and how different societies respond to stimulus. Because of this, there's a big difference between a do-it-yourself attempt and the techniques of a professional.
A professional sign designer can take all of the information you want to convey and create concepts for you to review. Although you have ultimate control, don't make the design contract about your personal work of art. Just because you'd like to see something cool doesn't mean it'll work as a sign, so additional work needs to be made and some things may need to be omitted.
If there's something you, a friend, or colleague absolutely must add for personal reasons, secondary signage can be made. It doesn't necessarily have to be off to the side, but the design either needs to be perfected into the advertisement or delivered after key information is absorbed by the reader. Contact a window graphics design and installation company like 10 West Commercial Graphics to discuss different techniques for your signs.