Sketch design on paper. Plan stamp to fit eraser. Make lines bold, avoid tiny details. To transfer artwork to eraser, use a 2B pencil for design, then place face-down on eraser & burnish back of paper w/tablespoon. Design transfers to eraser. Cut away negative space, leaving design. Go slow, work in good light. A v-gouge, for carving linoleum blocks, from art supply, will give easy cuts, or use X-acto knife. Cut at an angle, to remove slices of eraser. Sacrifice an old eraser & practice!