2. In the12mm flat marker, the word "insulin" is drawn in yellow. The pancreas and the island below are blue.
3. Use a small double-headed marker with the round head black facing the border edge of "Su", and decorate the border edge of "Island" in the poster title with the round head (thin head) black in the big double-headed marker.
4. In order to reflect the cool effect of the title font, you can use a correction pen (correction liquid) similar to a pen to decorate the upper left corner of the font strokes with white edges to create a highlight effect.