10 Minute Halloween Design Challenge (Kittl Edition)

About this video

RJ Martinez attempts to create a Halloween t-shirt design in Kittl, starting with research rather than designing blind. He points to a trending ghost-with-flowers concept, citing listings he shows with 87 monthly sales, others with 10 sales, and several with 20 add-to-carts, plus one noting 2 bought in the past 24 hours — signals he treats as demand even when reviews are still low. He stresses taking inspiration to make an original design, because copying a ranking design 100% leaves you behind it. In Kittl he starts a Merch by Amazon template at 4500 by 5400 at 300 DPI, uses screenshots of reference designs with ChatGPT to build prompts, and generates images with Ideogram 3 inside Kittl. He upscales the chosen result, removes its background, notes the flowers and pumpkin differ from the reference, and experiments with adding a witch’s hat, stars, bats, fonts from Kittl’s library, textures, text masking, and Kittl mockups that he can download and share on social media. Finally he runs the designs through his free custom GPT for Merch by Amazon, which produces a brand, title, two bullet points and a description aimed at how buyers search, and checks for trademarks — a process he says took 2 minutes and 32 seconds for one design. He says the finished designs were uploaded and published to Amazon Merch, and repeats that sellers must still double-check trademarks themselves before uploading anywhere.

Key takeaways

• Research first for demand signals such as monthly sales, 20 add-to-carts, and ‘bought in the past 24 hours’ before designing
• Take the concept from a trending design but make your own original version — copying a ranking design leaves you behind it
• Use ChatGPT on screenshots of references to build prompts, then generate in Kittl with Ideogram 3 on a 4500x5400, 300 DPI Merch by Amazon template
• Finish in Kittl by upscaling, removing the background, and using its fonts, textures and mockup tools to prepare social posts
• Use a listing GPT to draft brand, title, bullets and description around buyer search terms, but always double-check trademarks yourself before uploading

Episode details: published September 15, 2025 · 12:24 long. Summary written by Self Growth Videos from the episode itself. Business results and any income figures mentioned are RJ Martinez’s own claims, shared for education — they are not typical or guaranteed.

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