Two comments about marking gweths, and one about enchantment marking in general.

> mark my gweth with my stamp
You lazily wave the stamp over the freshly enchanted gwethdesuan. The imbue spell's expiring magic latches onto the engraved image and permanently imprint it within the sigil lines.

>look gweth
You see the initials "S. A." impressed into the surface of the mark.

1) It should be "imprints", not "imprint".

2) The description of marking the sigil lines suggests that the mark shouldn't be visible in the look, but instead should be seen in the focus. However, the mark appears in the look but not the focus. This is specific to gweths and a few other items; for most enchantments, the mark appears in the focus as intended.

3) That should be "the surface of the gwethdesuan."