Personal letters should be handwritten on white, ivory or cream paper, with a minimum weight of 100 gsm to avoid show through.
More contemporary styles may be in more adventurous colours, with matching or contrasting envelopes.
Watermarked paper is usually a sign of good quality.
Use a lined undersheet to keep text straight, and use black or blue ink.
A personal letterhead should include postal address, telephone number and email address.
Do not include your name in a letterhead used for personal correspondence.
If budget allows, have letterheads engraved.