Avoid "footballs" - points on the ends of ellipses
Structure of cylinders, vases, bottles
The direction of hatching describes the form of the object
Mixing colors: Layer hatching with multiple colors to "mix". Experiment to find at least 5 observed colors in the glass still life.
At least 3 thumbnail sketches of possible compositions in your sketchbook: Move around the bottles with different combinations, background colors, and colors on the table.
Arrange the objects as if you were blocking characters in a story - who is next to who, how far or close, etc. Also consider point of view. Is the audience looking up at the characters or looking "over the shoulder" of one?
1. Does the direction of hatching describe form?
2. Do shapes and edges reflect observation of "funny shapes" and implication, or simply describe outline?
3. Are colors mixed by layering hatching?
4. Is there interesting cropping and point of view for overall composition?
See this page that gives examples of cross-hatching.
See another page from Buzzle on various colored pencil techniques.