Go to
https://www.wikitree.com/index.php?title=Special:DNATests&u=15184179
and under Add New DNA Test Information, select FAMILY TREE DNA FAMILY FINDER.
When finished click the ADD TEST button
Within 24 hours your autosomal test (and X chromosome) information will automatically get associated with the WikiTree profiles of your close relatives (within 8 degrees / 3rd cousins and closer / 6th great-grandparent and closer).