Natalie Nakase saw it in her team’s much-improved body language — shoulders back and heads up. Golden State’s huddle got tighter as the close-knit Valkyries came together. The second-year coach believes much of that had to do with her own better messaging and delivery for a Game 4 win at Atlanta that evened the best-of-seven WNBA Finals at 2 games apiece going back to the Bay Area. Point guard Veronica Burton believes everyone could see it, beca…