They look GREAT Linda! I love the blend of colours and the style. As you say it is very relaxing.
To get the shadows to look right you will need to use Advanced rendering. Before you try it, do a Search on the forum for some tips, as there are a few traps and bugs at present. To avoid most of these set the Sun to Overcast, use Quality 3 at least and set the output size to small (eg 320x240) until you get the lighting about reight then try a larger size as it takes much longer to render.
It is well worth doing and very rewarding when you get it right.
Allan