By Richard Cowan WASHINGTON (Reuters) -An 11-year-old survivor of last month’s mass shooting at a Texas elementary school told U.S. lawmakers on Wednesday how she desperately acted to save her own life after the gunman shot a friend next to her, saying, “I got the blood and put it all over me.” Miah Cerrillo, 11, and the parents of multiple young Americans killed and wounded in a spate of recent mass shootings testified on Wednesday before a congressional panel as a bipartisan group of senators worked to see if there was any compromise on gun safety that Democrats and Republicans can agree to….