Can pictures like these be used for a modeling portfolio? Like samples of work?

Im not paying no $700 to get professional pictures done... I was in a Mini Truck Magazine in the summer.... Can I just use the picutures I got done there for a samples? Will companys accept these? a href="http://www.flickr.com/photos/mizzkelly/" rel="nofollow"http://www.flickr.com/photos/mizzkelly//a