Thank Them, and Ask Them to Thank You _ must be sincere Money is often a touchy subject, so politeness about it is a good idea. Your clients are paying you money that they've earned with blood, sweat and tears, so let them know you appreciate it. You should also invite them to contact you if they have any questions and, more importantly, make it clear that you appreciate their present (and future) business. Some people also welcome testimonials; for example, by adding, "Let us know how we did. Write a testimonial and sent to... " If you're building your website's testimonials page or want to complete the feedback loop, this is a great way to get clients to give feedback on your work. If they have suggestions for making the process smoother, it's also a great opportunity for you to improve.
If you are using a limited company as your payment structure you will need to raise invoices for the services you provide or goods that you sell, this article explains how to prepare one with an example, the best practices you need to know, double taxes case example, proforma invoice example and in the end I will give you tips about how to find a good invoice example online, I will also include a couple of invoice example free download in Microsoft Word and Excel format for you to use.