Definetly you can use a blog instead of a website. It depends on your needs. This is an example of a multi-paged blog that includes a portfolio and info:
http://www.ninajohansson.se/
I have visited your blog and it seems that you are using it mainly as an online gallery, then I would recommend you to use at least a template that works better as a photo-gallery. Some free examples:
(Blogger)
http://visionwidget.com/inspiration/...templates.html
(Tumblr)
http://www.makeuseof.com/tag/top-10-...ate-portfolio/
(Wordpress)
http://www.reencoded.com/2009/04/05/...allery-themes/
Purchasing a professional looking template isn