To start your own boutique from home, you should first choose a niche you're passionate about and identify market gaps. Then, write a business plan, develop your products, choose a brand name and logo, and price your products. You can create your online store using platforms like Shopify, where you can install product apps, select a theme, and customize it with your branding. You should also consider registering your business for taxes, opening a business bank account and credit card, and getting the necessary permits and licenses. Finally, you should market your online clothing store to your target audience.
I hope that helps! Let me know if you have any other questions.