Completed step 1 page 06-07. Fitted skeleton into VS-1201main skin. Clecoed per procedure – very tight fit but with patience was able to get all holes clecoed and lined up. No deformations noted so that skin was ready to rivet. Started step 2 working from leading edge as recommended – did part on one side and then turned over an did same section on opposite side. Completed all riveting on one side of the skin with excellent results.