手前 => considering; before; in front of; one’s standpoint N1
のが上手 => to be good at doing something N5
を契機に => as a good opportunity/chance to N2
Expected
のが下手 => to be bad at doing something N5
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
をきっかけに/を契機に => with… as a start; as a result of; taking advantage of N2