Although it seems like there is no shortage of templates available these days on the Internet for any number of printed materials, it is a little bit trickier trying to find poster templates. This is because they are suited for posters that are a more awkward, larger size than the smaller flyers or postcards. One way to get around this is to use a flyer template and then simply blow it up once you have made your final design. There are a few differences however in designing a flyer or designing a poster that should be taken into consideration.
For example, because a flyer has less available space than a poster, the message will need to be more succinct and the visual impact must be stronger. Flyers are often handed out to people on the street who may just toss them in the trash if they aren't immediately eye-catching. A poster, by its very nature, gets away with at least receiving a second glance. This is because they are usually put up on walls or inside of establishments. Taking this into consideration, poster templates can then be all over the map as far as different layout options.
One thing that no poster templates will have however is an over-reliance on text. No one is going to go up to a poster and read an essay. The poster is a primarily visual form, and thus the templates will mostly have suggestions for visuals that would be effective in a variety of formats. There are websites available with poster templates of all different categories, and the best way to start narrowing down what you want on your poster is perhaps to browse through all of these different possibilities to see what works. Try out your information or visual ideas in several different templates.
The next step is then to find a way to print out your poster once you have found the layout that works within the various poster templates. This may be a bit more costly, but it is well worth it. Studies show that businesses that promote their services will well-designed posters have a far greater success rate in drawing in customers than do those that stick to smaller flyers alone. The best marketing approach is to use all of the above. It's possible to find a crossover template that may work for all forms, in which case this is the one to stick with.