Watercolor painting - Yellow roses

In 2012 I was in the Botanical Gardens and Rose Garden in the city of Olomouc, Chech Republic. I took hundreds of photos, mainly of roses. I love to paint flowers, so I just had to paint some of the roses I saw during my trip to Chech Republic. They remind me that sunny, beautiful day in the Rose Garden. Yellow flowers are very tricky to paint. I have a big problem with them, but practise makes perfect. The size of this original painting is: 12.6“ x 16.1“ (32 x 41 cm). It is painted on very good quality