Here is useful advice about light, mid-and dark tones, and a little practice. Practice is good, right? 
http://theart123.com/no-fail-watercolor-tips-for-light-middle-dark-tones/

See you Thursday, Jan. 18 for a p.m. snow scene with Sterling Edwards 1:00-3:30. (DVD)  Then at 5:30-7:30 with Cindy Baldassin for a surprise workshop--just show up; she'll bring materials. That sounds intriguing. Free.

FRIDAY Jan. 19 is Gwen Hawley's next workshop at South Jordan Community Center: 10770 So. Redwood Road (The North building). 9:30-12:30.  She'll continue our work on a scene with deer and a pine/spruce tree, boulders. Many elements for good practice! $3.00 per session