Watercolor ATC cards make it easy to create and trade miniature originals with professional results. Each pack includes ten handcut 2.5×3.5 cards made from premium 140 lb/300 gsm cold-press paper—the sweet spot for strength, texture, and beautiful color blends. Whether you paint delicate florals, bold abstracts, or quick studies, these watercolor ATC cards deliver a satisfying, sturdy surface in a pocket-friendly format.

Why Choose Watercolor ATC Cards (Cold Press, 300 gsm)

Cold-press paper offers a subtle tooth that grips wet media, soft pastels, and ink while still allowing fine details. At 300 gsm, these cards resist warping, hold washes evenly, and handle gentle lifting and layering. Because each card is handcut (not machine cut), you get the artisanal charm collectors appreciate—slight human-made variations that say “made by an artist,” not mass-produced.

Perfect for ATC & ACEO Creators

Designed for swaps, mail art, and small-format galleries, these watercolor ATC cards give you a portable canvas that fits card sleeves and mini frames. Paint vibrant watercolor scenes, add ink line art, glue lightweight collage, or explore mixed media; then sign, date, and trade. The 2.5×3.5 size keeps projects approachable—you can finish a piece in a single sitting and build a cohesive series over a weekend.

Premium Features You’ll Feel

• Heavyweight 140 lb / 300 gsm stock for confident wet-on-wet techniques

• Cold-press texture for lively granulation and expressive brushwork

• Handcut edges—clean, crisp, and artisan-made

• True 2.5×3.5 inches for easy storage in standard trading-card sleeves

• Pack of 10 for batch painting, themed sets, and swap events

From first wash to final signature, these watercolor ATC cards keep your pigments luminous and your lines sharp. The surface handles multiple layers without pilling, so glazing and lifting remain predictable. If you enjoy line-and-wash, the tooth accepts fineliners and dip pens beautifully once your washes are dry.

Use Ideas & Mini Project Prompts

• Paint a 10-day series (one card per day) to build momentum.

• Create a color-story set—warm vs. cool palettes on matching watercolor ATC cards.

• Try mini landscapes, botanicals, or character studies to practice composition.

• Make ACEO gift inserts for greeting cards or slip a finished card into a thank-you note.

• Build a seasonal swap collection (spring florals, spooky minis, winter scenes).

Tips for Best Results

1. Lightly tape edges for tidy borders and to stabilize while you paint.

2. Pre-wet for smooth gradients; the cold-press 300 gsm stock handles generous water.

3. Let layers dry fully before adding ink or detail.

4. Sign, date, and title the back—collectors love provenance on watercolor ATC cards.

5. Protect finished pieces in standard 9-pocket sleeves or mini top-loaders.

Materials & Specs

• Size: 2.5″ × 3.5″ (ATC/ACEO format)

• Weight/Quality: 140 lb (300 gsm), cold press

• Quantity: 10 cards per pack

• Cut: Handcut, not machine cut

• Media: Watercolor, gouache, ink, light collage, colored pencil, graphite, gel pen

These watercolor ATC cards are crafted for artists who value feel and finish. If you’re new to minis, you’ll love the manageable format; if you’re a seasoned swapper, you’ll appreciate the robustness, tooth, and handmade touch. Start a themed set, practice new techniques, or warm up before larger paintings—the possibilities are tiny but mighty.

For a fun companion project, explore our Create-Your-Own ATC Card Kit with themed designs and blanks to mix and match—perfect for quick swaps and gifting.
Internal link: Create-Your-Own ATC Card Kit – 10 Cards.

Want to learn more about ATC standards and inspiration from a trusted art-paper brand? See Strathmore’s overview of Artist Trading Cards for background and use ideas.
External link: Strathmore — Artist Trading Cards.

Bring home a pack (or two), paint your mini masterpieces, and trade with confidence—click Add to Cart to get your watercolor ATC cards today!