Vintage Harvest Cornucopia project with IOD moulds and terracotta air-dry clay

Vintage Harvest Cornucopia: Creating an Autumn Heirloom with Clay Moulds

Terracotta clay, timeworn florals and softly layered finishes transform a simple MDF Studio Surface into a richly detailed celebration of the harvest season.

Carrie ~ Steel Roots Market

Vintage harvest cornucopia wall art created with IOD moulds, terracotta air-dry clay and Decoupage Queen paper

A Harvest Story in Clay & Paper

This Vintage Harvest Cornucopia began during a Decoupage Queen livestream, with a layered MDF Studio Surface and a sheet of Vibrant Harvest paper setting the direction for the entire piece. Its warm, timeworn palette invited something abundant and richly textured—an autumn composition that felt collected rather than newly made.

Using terracotta Jovi air-dry clay, I began casting details from the IOD Cornucopias Mould and layering flowers, leaves, acorns and ornamental elements across the surface. The project continued to evolve slowly at the worktable, with each casting helping to connect the printed paper and dimensional design.

The heart of this project is the contrast between the flat, patterned paper and the deeply dimensional clay castings. The cornucopia became the anchor, while clustered florals and small architectural details created movement around the frame. Antique wax settled into the texture, and a soft white dry brushing brought the raised details forward without covering the natural warmth of the terracotta clay. A small moulded label, stamped with “HARVEST,” became the quiet finishing detail.

Close-up of layered IOD mould castings made with terracotta Jovi air-dry clay
Vintage harvest cornucopia mixed-media project with clay moulds and decoupage

Studio Notes: Working with Air-Dry Clay Mould Castings

Air-dry clay offers a wonderfully approachable way to explore detailed moulds, particularly when a project benefits from a softer, handcrafted character. For this piece, I used terracotta Jovi clay while the castings were still pliable, allowing the elements to settle naturally across the layered surface.

Small cracks or shifts can become part of the timeworn finish rather than flaws to hide. Once the castings were secure, antique wax emphasized the recesses, and a light white dry brushing picked up the greatest details. Using a nearly dry brush and building the highlights gradually helped preserve the warm terracotta beneath.

Part Two: Finishing the Vintage Harvest Cornucopia

In this Morning at the Cottage Atelier continuation, I revisit the project with fresh eyes and explore the final details that bring the composition together. We talk through soft highlighting, placement choices and creative variations you might try when adapting the idea to your own mould collection and personal style.

Techniques to Carry into Your Next Mould Project

  • Build the composition before gluing. Arrange the largest casting first, then use smaller florals, leaves and ornamental details to connect the design.
  • Apply air-dry clay while it is pliable. Fresh castings can gently follow the surface and overlap neighboring elements more naturally.
  • Layer dark and light finishes. Antique wax settles into recessed details, while soft white dry brushing brings the highest textures forward.
  • Use a nearly dry brush. Remove most of the paint before highlighting and build the finish gradually.
  • Save room for a final storytelling detail. The small label stamped “HARVEST” gives this project its finishing signature.
  • Let the paper guide the placement. Use the printed pattern as part of the composition rather than covering it completely.
  • Embrace handmade character. Small cracks and irregularities can enhance an aged, timeworn piece.

Gather the Project Supplies

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Begin with a Blank Studio Surface

This project began with a simple two-piece layered MDF surface designed by Steel Roots Market. The raised inner panel creates a subtle framed effect while leaving an open canvas for decoupage, paint, transfers, clay castings or mixed-media layers.

I especially love surfaces that offer a starting point without deciding the finished project for you. The same blank could become a harvest plaque, a cottage floral panel, a holiday keepsake or something entirely personal to your own creative style.

Blank two-piece layered MDF Studio Surface ready for decorating
Separate layers of the Steel Roots Market MDF Studio Surface
Blank two-piece layered MDF Studio Surface ready for decorating

Watch the Finished Tutorial

A closer, edited tutorial featuring the final layers, antique wax, soft white highlighting and the stamped “HARVEST” label is currently being prepared for the Studio Journal. Please check back soon—or subscribe to the Steel Roots Market YouTube channel to be notified when it is available.


Continue Creating at the Cottage Atelier

The Cottage Atelier is a gathering place for creative projects, studio stories, seasonal inspiration and techniques explored slowly at the worktable. Visit the Steel Roots Market YouTube channel to watch the latest tutorials and studio visits, and join the email list for new Studio Journal entries, limited Studio Surface releases and thoughtful notes from the Atelier.

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A beautiful finish is often built slowly—one layer, one detail and one creative decision at a time.

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