X Just Dropped a FREE AI Mockup Tool for Print On Demand Sellers

About this video

The creator demonstrates using Grok, the AI assistant inside X (formerly Twitter), to turn print-on-demand designs into lifestyle mockups for free. He says you long-press an image on mobile or use the edit icon on desktop, or upload a design in the post composer, then prompt Grok to place it in a scene; his preferred Method 2 is grok.com, which gives a bigger workspace for refining in conversation. He gives example prompts for a black t-shirt on a smiling man in his 30s in a park, a mug on a wooden desk next to a laptop and plant, a navy hoodie on a woman on an autumn city street, and a framed poster above a couch, and says generation takes about 15 to 20 seconds, with follow-up prompts to fix size, placement or clarity. He contrasts this with Placeit at about $15 a month and Midjourney at $10 a month, noting free X users get limited Grok access and Premium subscribers get more. Best uses he lists are text designs (he tested a fishing dad design on a man in his 40s by a lake), mugs for Etsy, trend listings live in under 30 minutes, social media promotion, and wall art/KDP room scenes; Etsy gives 10 image slots per listing. Pro tips: give detailed prompts (shirt colour, age, setting, lighting), match the model to the buyer, and batch-create on a ‘mockup Monday’ — 15 to 20 designs in under an hour. Limitations: Grok can distort text and misplace designs, free users can hit daily limits, and Placeit still wins for precise catalog work at scale.

Key takeaways

• Use Grok inside X (long-press on mobile / edit icon on desktop) or preferably grok.com to edit an uploaded design into a lifestyle mockup in about 15 to 20 seconds
• Prompt in detail — product and colour, person’s age, setting and lighting, photorealistic, design centred and clearly visible — then reprompt in the same chat to resize or reposition
• Cost comparison from the video: Grok is free/limited on a free X account with more access on Premium, versus about $15 a month for Placeit and $10 a month for Midjourney
• Match the mockup model to the target buyer and batch work: the creator suggests creating 15 to 20 mockups in under an hour for a week’s listings, and filling Etsy’s 10 image slots
• Know the limits: Grok can warp text and place designs off-centre, free tiers have daily limits, and dedicated tools like Placeit are still better for ultra-consistent catalog mockups at scale

Episode details: published April 18, 2026 · 17:12 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.

← Previous: This Tool Runs My eBay Store While I Sleep · Next: Amazon Merch Just Changed Your Royalties — Watch This Immediately →

All RJ Martinez videos · RJ Martinez profile · RJ Martinez on YouTube