A method of making a panel comprising an imperforate sheet of coloured or colourless light permeable material partially printed with a print pattern comprising a plurality of ink layers, said ink layers comprising a base layer and another base layer, said ink layers comprising a design comprising a design layer, said design layer comprising a design colour layer [C, M, Y, K], said print pattern comprising a plurality of connected and/or unconnected print pattern elements, said print pattern subdividing the panel into a plurality of areas of said print pattern and/or a plurality of unprinted areas of said light permeable material, and wherein the percentage of unprinted light permeable material is at least 5% and the light transmissivity of the panel is at least 10%, wherein a cross-section can be taken through said panel comprising two outer edges of said sheet of light permeable material and alternate printed portions and unprinted portions and a plurality of said printed portions comprising a part of said base layer [20, 24] and a plurality of said plurality of said printed portions comprising a part of said design colour layer [C, M, Y, K], wherein said design is visually independent of said print pattern elements such that if an observer adjacent to one side of the panel from which the design is normally visible moves away from said one side of the panel in a perpendicular direction from said panel until said individual print pattern elements can no longer be resolved by the eye of said observer said design remains clearly perceptible to said observer, wherein all of said plurality of ink layers comprise UV cured ink comprising an agglomeration of overlapping and/or contiguous and/or spaced individual deposits ofUV cured ink, said method comprising the steps of: (i) providing a substantially imperforate sheet of coloured or colourless light permeable material, and (ii) printing both said base layer and said another base layer and said design colour layer by means of a digital inkjet printer comprising a plurality of inkjet nozzles in a printhead, such that all said plurality of ink layers comprise UV cured ink printed by said digital inkjet printer, and wherein all said plurality of ink layers are only applied within said printed portions, said ink being ejected from said inkjet nozzles only within said printed portions, characterized in that part of said base layer and part of said another base layer and part of said design colour layer are printed simultaneously, followed by an incremental movement of said light permeable material relative to said printhead before another part of said base layer and another part of said another base layer and another part of said design colour layer are printed simultaneously. (i) providing a substantially imperforate sheet of coloured or colourless light permeable material, and (ii) printing both said base layer and said another base layer and said design colour layer by means of a digital inkjet printer comprising a plurality of inkjet nozzles in a printhead, such that all said plurality of ink layers comprise UV cured ink printed by said digital inkjet printer, and wherein all said plurality of ink layers are only applied within said printed portions, said ink being ejected from said inkjet nozzles only within said printed portions, characterized in that part of said base layer and part of said another base layer and part of said design colour layer are printed simultaneously, followed by an incremental movement of said light permeable material relative to said printhead before another part of said base layer and another part of said another base layer and another part of said design colour layer are printed simultaneously.