1. Choose Safe and Non-Toxic Materials: Use water-based or eco-friendly inks that are certified safe for baby clothing. Avoid plastisol inks, which can contain PVC and phthalates.

2. Select High-Quality T-Shirts: Opt for soft, organic cotton T-shirts that are comfortable for babies to wear. Ensure the fabric is breathable and hypoallergenic.

3. Design Considerations: Create designs that are cute, colorful, and appropriate for babies. Consider using simple patterns, animals, or baby-friendly themes.

4. Printing Techniques:

   • Screen Printing: Ideal for larger production runs and provides vibrant colors. Use phthalate-free and water-based inks.
   • Heat Transfer: Suitable for smaller quantities or detailed designs. Ensure the transfer material is safe and durable.
   • Direct-to-Garment (DTG) Printing: Allows for complex designs and customization. Use DTG printers with eco-friendly, water-based inks.

5. Testing and Certification: Ensure your printed T-shirts comply with safety standards (e.g., CPSIA in the USA) for baby products. Perform wash tests to check durability and ink adherence.

6. Size and Placement: Position designs away from seams and avoid large prints that might irritate sensitive skin. Use smaller, centered prints for baby T-shirts.

7. Packaging: Use eco-friendly packaging that is safe for babies and clearly label the product with care instructions.

8. Market Research: Understand your target market (parents, gift buyers) and create designs that appeal to them. Consider offering customization options for personalized baby gifts.

9. Online Sales and Marketing: Utilize platforms specializing in baby products or create your own website to showcase and sell your baby T-shirts. Highlight the safety and quality of your products in your marketing efforts.

By focusing on safety, quality, and appealing designs, you can create printed baby T-shirts that are not only attractive but also safe and comfortable for babies to wear.