The description of your post is another great way to place further emphasis on your message. Try to keep the text in the same style with each post, this will ensure that your business' or brand's 'voice' remains true throughout. The consistency will not only help you build your brand, but will also connect better with your audience, so set your style, and stick with it.
The description of your posts is the perfect place to include a 'call to action' (CTA) for your followers. A CTA is an action that you request of your followers, for example, 'Click the link in our bio to signup to our mailing list and receive monthly newsletters full of social media hacks and tips'. Or, 'Tag three friends you know will love this picture'. We recommend only using a CTA every 3-5 posts, you have to provide value to your followership before you can reasonably expect them to take action. Be sure to use strong CTAs that will show measurable results, allowing you to analyse the ROI of the time, effort and money that you spend on Instagram.
Always, double-check spelling and grammar before posting. You want to represent your business in the best possible way, which means getting it right first try.