Newly finished commissioned work - 'Lily'

I was commissioned by an old friend to do two pictures for him and his wife. They bought a small piece from me a few months back and are now starting to collect. They want all three pieces to be nature in theme and be bright and bold. The first work they bought from me was a 5 x 7" retro flower picture that I often do variations of because they are so popular. This go round they requested a 6 x 8" and an 8 x 10". The 6 x 8 was left entirely up to me. The following pictures are of what I came up with. I just finished last night. I am pretty happy with the finished effect. I used all of the colors that I used in their previous picture plus many additional. I plan on incorporating this element in the third as well. The couple plan on hanging their collection as a grouping - and while they will all be different in subject and perhaps even stylistically, there will at least be a little similarity amongst them all. I have sent off photos to him but have year to hear back as to whether or not he likes the work. I hope it is a yes... then I can get started on the next one :)

Here is a photo of the picture I made that inspired the first work the couple commissioned from me: