When starting a sentence in Celtic, what is the recommended height for the first letter?

In Celtic calligraphy, the aesthetic design principles emphasize the importance of the first letter of a sentence, often referred to as the initial or drop capital. For this style, it is traditional for the initial letter to be two pen widths taller than the other letters in that line. This proportional increase not only enhances the visual appeal of the text but also serves to signify the beginning of a new thought or section, drawing the reader's attention effectively.

Using two pen widths creates a balance that complements the rest of the text while ensuring that the initial letter stands out enough to mark the beginning of the sentence without overpowering the overall flow of the writing. Celtic calligraphy often employs intricate designs and embellishments, and a taller initial letter provides a canvas for such artistry, visually enriching the script and elevating its decorative quality.

The emphasis on this specific height maintains the harmony and balance characteristic of Celtic script, allowing for both readability and artistic expression.