Congratulations – how exciting.
In addition to developing your own brand and online presence, I would recommend looking at sites like https://www.artbureau.co.nz/for-artists which provide a central market-place for New Zealand artwork and help artists to expand their collector base. They will have an existing database and visitors to the website which may help you build your profile. Although dated, I came across this last year which a pal of mine referenced and found helpful http://www.creativenz.govt.nz/assets/ckeditor/attachments/86/smart-arts-low-res.pdf.
Share your website with us when you go live.