Letterpress is a beautiful process that can achieve amazing results. But it's important to remember that letterpress is an old process and has some limits as to what style of design works best.

Suitable Not suitable
Small number of one or two spot colours
Large number of colours or full colour photographs
Dark text on a light paper background
Light text on a dark printed background
Pen and ink style linework illustration Photos, gradients, washes or tones
Vector artwork from Adobe Illustrator, Adobe InDesign or Affinity Designer Raster artwork from Adobe Photoshop, Corel Paint or MS Paint