Refresh your memory of the Mattheur open brushwork and direct style of painting online - often. There's plenty about. If you really like his work there is absolutely nothing wrong - in terms of learning and study - by using his styles and trying to approximate his techniques as a mentoring of yourself. ( Theyre called Transcriptions) I do it with Pieter Bruegel's The Hunters In The Snow ( in my head and by drawing) just because I still find it one of the most exciting paintings ever. Cheers.Dai.H.