If not, treat each plot or script as the point of introduction. Your initial description of the Golem is a visual checklist, but reveals very little about the actual character. You want to work with the artist, so you need to make sure you tell him everything you know about who the characters are and what their world is like. Here's an example of what I do. The average person is rich and determined to show it.
Ostentation is the norm.
The richer you are, the higher you live. He wears an open-chested vest that shows off the sigil on his chest. Imagine that the material of the sigil exploded outward, creating the scar marks in its image, so we have the fierceness of healed scar and the glint of the material of the sigil. Warm gray eyes with heavy eyebrows. He carries small tools and weapons in pouches or a band like a carpenter's belt.