Section 853.51 - Execution of will(1) The only method of executing a Wisconsin basic will or basic will with trust is for all of the following to occur:(a) The testator shall do all of the following:1. Complete the blanks, boxes and lines substantially in accordance with the instructions.(bc) The witnesses shall comply with s. 853.03(2).(2m) Any failure to comply with the instructions in a Wisconsin basic will or basic will with trust, other than the requirements for the testator's and witnesses' signatures, does not affect the validity of the will.1983 a. 376; 1997 a. 188.