Here are some tips to improve your writing skills for commerce:

1. Read extensively: Read a variety of business and commerce-related materials such as articles, books, and reports. This will help you familiarize yourself with different writing styles and enhance your understanding of the subject matter.

2. Understand your audience: Consider who will be reading your writing and tailor your language and tone accordingly. Different audiences may require different levels of formality and technicality, so it's important to adapt your writing style to effectively communicate with them.

3. Practice writing regularly: Set aside dedicated time for writing practice. This can include writing business reports, proposals, or even maintaining a blog. The more you write, the more you will improve your skills.

4. Seek feedback: Ask someone experienced in commerce or writing to review your work and provide constructive criticism. Feedback can help you identify areas for improvement and develop a better understanding of your strengths and weaknesses.

5. Improve grammar and punctuation: Poor grammar and punctuation can undermine the credibility of your writing. Review grammar rules and practice using them correctly. You can also use grammar-checking tools and resources to help you identify and correct errors.

6. Use clear and concise language: In business writing, it's important to convey your ideas clearly and concisely. Avoid unnecessary jargon or complex language that may confuse your readers. Use simple and straightforward language to communicate effectively.

7. Develop a strong structure: A well-structured piece of writing is easier to follow and understand. Use an outline or template to organize your thoughts before you start writing. Include an introduction, body paragraphs, and a conclusion to ensure coherence and flow.

8. Proofread and edit: Always proofread your work for errors and typos. Take the time to edit your writing to improve clarity, eliminate redundancies, and ensure consistency. It's also helpful to read your writing out loud to catch any awkward phrasing or errors.

9. Expand your vocabulary: Building a diverse vocabulary will help you express your ideas more precisely. Regularly learn new words and phrases related to commerce to expand your vocabulary and improve your writing.

10. Stay up to date: Keep abreast of current trends and developments in commerce. This will help you write about timely and relevant topics, making your writing more engaging and valuable.

Remember, improving your writing skills takes time and practice. Be patient, persistent, and open to feedback, and you will gradually see improvement.