Aja Uranga prepares for milk to be poured on her head by magician Howdy Do Dat at Relles Florist. Lots of young and old trick or treaters were roaming through midtown Sacramento today. Also at Relles Florist there was face painting, pumpkin art, plus dogs and owners preparing for a parade that ended on L Street. Prizes were awarded at the end of the parade route.   Here are some scenes: This dapper fellow was ready to march in the doggy parade sponsored by the City Animal Care Services.   A costumed youngster does some pumpkin art at Relles.   These little ones wait patiently in line.   Lots of folks trick or treated along J St.   This evil Jester heads into First United Met