Carefully stripping away small sections of paint at the Old Whaling Church in Edgartown, the muralist Margot Datz was looking for guidance for her next design.

When artist Margot Datz begins a new project she finds it hard to stop. “Until someone rips me off the wall I’m there,” she said on Wednesday morning at the Old Whaling Church in Edgartown. Although no one is coming to rip Ms. Datz off the wall, her brother Stephen Datz is on hand to “help her out the door,” he said. Good thing, too, as this weekend there will be a wedding held at the church. Scaffolding and bridal gowns do not really mix. But magnificently-restored murals serving as a backdrop for wedded bliss definitely do.

When the Oak Bluffs Steamship Authority ticket office opens Monday for the summer season there will be plenty to see inside and overhead. Margot Datz, a much celebrated Edgartown artist, this winter completed a 70-foot mural that spans three overhead walls. The painting was commissioned by the Steamship Authority last fall and it took her, with other projects, a winter to complete.