From stories created mostly from class assignments, Carson City resident Judie Walker Hartwick has pieced together her second book, a collection of short stories called “Bits and Pieces.” “About a year ago I started getting out all these stories out and I decided to do something with them,” said Hartwick, who returned to school when her children were adults and graduated from Western Nevada College in 2000.She spent time expanding some of the stories and perfecting others, resulting in 15 stories, “enough to do something with,” she said.“It was very rewarding,” Hartwick said. “When I got done, I just went …