Even as a bilingual person there is usually one language that is closer than the other. Since i grew up in Sweden with mostly Swedish around me, my English does need more support. Still copywriting is an art and even i Swedish I would have needed some help. Having said that I want to inspire you to take a firm grip of your writing skills today, and improve your copywriting.
If you want free shipping wherever you live on the planet, this is the best place to buy all your books. Reading is also important. A good novel can teach you tons about style and captivating manners using pen and paper. Or keyboard and screen. 😉