[![enter image description here](https://i.stack.imgur.com/lo0WY.jpg)](https://i.stack.imgur.com/lo0WY.jpg)

Above is a miniature example of my problem.

For an arts and crafts project, I need to trace a shape on a paper (which in this case is a triangle), on to a black illustration board, and the shape on the black illustration board must be visible.

Any solutions?