Three Sharpie permanent markers and a box of six Sakura Micron fine line pens against a pink background.
A set of colorful markers and highlighters, including Stabilo Pen 68 Max, display on a pink background.
Stacked colorful decorative washi tapes, with various patterns including stars, placed on a pink background.

The Outlines:

You need a waterproof black fineliner or marker, two brands I love are:

The Colors:

Here’s where anything goes. My go-to are these, but feel free to include a variety of pens and markers when you feel like it:

The Tape:

If you want to frame your artwork later on, test the paper-tape-compatibility first. Here are my go tos: