realistic 3d render of an empty t-shirt mockup for custom apparel showcase

blue clothing brand design art furniture screenshot purple footwear textile outerwear person dress fashion presentation room advertising spring sleeve t-shirt mockup render empty t-shirt apparel custom design graphic product showcase creative template modern high-quality branding digital print ready vector editable stylish apparel promotional online store merchandise marketing professional customizable minimalistic trendy garment artist demand retail social media unique designs mockup collection aesthetic business ecommerce generator portfolio flat lay versatile mockup