An Upside-down bow hold for Cellists
You can compare your upside down bow hold to these two illustrations. The top picture is the initial placement of the middle finger on the metal guard, where the frog meets the bow hairs... and the lower picture is really the continuation of that hold as you bend your fingers around the stick, so that the little finger meets the stick. Some Cello bow holds, including the one recommended by Simonetta has the little finger continuing around to the far side of the frog, and firmly adherent to it. In other words, not the "violin" hold with the tip of the little finger meeting the stick. These two illustrations which I found are really useful in placing the middle finger.
Note that this hold is quite slanted ( again rather violinistic looking ). Simonetta actually prefers a slightly less acute slant, somewhat perpendicular to the bow. Still, the drawings are rather nice. Remember individual hands always vary slightly - so it is quite impossible to render a foolproof template. The one particularly pleasant aspect to the bow holds on this page are the way the fingers are not too far apart. This allows for freedom and flexibility in the hand, and one should only open the span of one's hand slightly, to gain in stability and grasp. Again, care must be used not to separate the fingers too much. These illustrations are particularly elegant in this respect. Remember the thumb is placed opposite the middle finger as a general rule.
