Top: Dakota Davidson works on a chalk baseball Saturday during Newton’s ArtFest. Davidson was finishing Karate practice at Budokan Martial Arts and joined in the chalk-art event. He was one of the first 50 children to sign up for the event. Right: Bunker Hill High School student Brandon Medlin draws a colorful guitar Saturday. Last year, Medlin said he drew an owl during the ArtFest’s chalk contest.