Make sure the designs are not too small or detailed, especially if you do not have a lot of experience with a soldering iron.
Use the traditional layout if you want to. This is where the letters are written out in two slightly-arced lines at the center, with “Yes” and “No” above and the numbers and “Farewell” below. You could also use a diamond layout. In this design, the letters are written in a diamond shape, with each of the four points lining up with the center of that side of the board. The numbers are written inside this diamond and the corners are allocated for the words (allowing for an additional phrase, like “not now”). You could also try a circular layout. This design is similar to the diamond, but uses an oval shape instead.
You can also embellish your board with physical objects, such as set spots for candles, attached stones (quartz is good for this purpose), or places to put the elements (a bowl of water, a branch, and other such items).
Try to use colors that contrast well. You want to be able to read your text easily.