That was easy and quick ! Less than a week for a cardigan and three front parts !
free pattern here : http://www.ravelry.com/patterns/library/presto-chango
I used Phildar yarn Aviso in orange and yellow, had to change the pattern a bit, but it was really simple. I decided not to do lace for the front parts, being afraid of the leaks. If I knit it again, I’ll knit back and side at the same time.