Runesmith can't use runes on himself
In Trace Runes it is written "You apply one rune to an adjacent target matching the rune’s Usage description." and you can't be adjacent to yourself so you need to use 2 actions to be able to trace a rune on yourself "If you spend 2 actions to Trace a Rune, you draw the rune in the air and it appears on a target within 30 feet."
Am I wrong?