Twitter is the only social media platform you can attract over 500 twitter followers away from the very account. The website can help you achieve all this without giving much consideration to your Twitter account. Focus all your channels now to building your website popularity to draw traffic from all internet users. Post content that will attract people to your website and below every blog you post, encourage them to follow you on twitter to get more content of the same.
It is upon you to ensure that the content you are posting on Twitter and the website is related so as to retain them on both platforms. If they feel that the twitter page is giving them a raw deal, they may opt to unfollow you and stick to your website only. That is why you need to engage them equally, or you may lose many so fast. As you incorporate optimization techniques and provide quality content on your website, getting 500 twitter followers is easy and speedy. As the numbers grow, keep updating and posting regularly to engage them.