The challenge of transforming two-dimensional art into three-dimensional or motion art can be a challenge itself. When designing for flexographic lenticular in particular, there are some important considerations to keep in mind.
It's important to keep the art elements on as many separate layers as possible. Do not flatten the artwork into one layer. This allows the various elements to be animated individually for the lenticular effect.
All lenticular effects and animation must be a single color (Cyan, Magenta, Yellow, Black, or Spot Color) in order to prevent registration issues in the final print.
When using background patterns, the pattern must be a single color (Cyan, Magenta, Yellow, Black, or Spot Color). It's also important to create the pattern larger than its visible area. It may be necessary to make the image an inch larger than the trim size on either side to accommodate this.
Patterns that are high contrast show depth better. Bold lines and gradients hold well on press as well. Line detail that is reveresed out of a color should be at least 0.02 inches wide.
Color density shouldn't exceed 80%. Spot colors that are “dark” or “dirty” work better than spot colors that are “pure” or “bright.”
Pantone 174 C is better than Pantone 171 C
Pantone 357 C is better than Pantone 354 C