Conversation so far:
What was unique about Lawrence Alma-Tadema's style?
Lawrence Alma-Tadema's works are remarkable for the way in which flowers, textures and hard reflecting substances, like metals, pottery, and especially marble, are painted.
Was there anything else unique about Lawrence Alma-Tadema's style besides the way in which flowers, textures and hard reflecting substances, like metals, pottery, and especially marble, are painted?
Lawrence Alma-Tadema was a perfectionist. He worked assiduously to make the most of his paintings, often repeatedly reworking parts of paintings before becoming satisfied by his own high standards.

Question: Who were his influences?
Self-contained rewrite: Who were Lawrence Alma-Tadema's influences?