Retiform literally means 'composed of crossing lines and interstices; netlike' so in card making we translate this and create grids with crossing lines on the card. To do this we mask off areas and use ink. This can be done with Post-it notes, masking tape or scrap pieces of paper to mask the area you wish to ink. Inking, using two strips of masking with a space between creates a very straight and defined edge. Using just one strip to mask an area creates a wider less fluid inked area. Both work well it just depends on what style of card you wish to create and who it is intended for as heavier and darker inking works well for masculine cards. I have made several cards using both techniques to show the variety of styles that can be achieved with this technique. I have also made a YouTube video tutorial which you can find below.