看了你写的内容，其实你的英语一点都不差。很多表达都已经到位了。在这里，我给点自己的意见，修改并完善了一些措辞。请参考： Titl: Application for a Color Design Training CourseDear James,I write to you to apply for the NCS color design training course. Probably, you know this course. I think that more professional color design skills will be of great use to improve my work quality and efficiency. Recently, there is a term from March 4th to 8th and it costs 4800 RMB. I hope that you can seriously consider my application and give me this chance to attend the course.Looking forward to your reply at your convenience.Best Regards,Ella
