Last of the leaves

The vineyards in our area are more or less carrying the last of their autumn orange-brown leaves. This particular vine grows in our back garden, on our patio's fringe. It's an old plant, established by the garden's original owner.

Looking at the leaf's veins - I wonder if a palm-reader could tell me anything about the plant, it's wine-producing potential, or perhaps its future in our garden. :)