ALT Attribute- Alt attribute is one of the main points to get good search result. Alt attribute is required to alternate text for an image, if the image cannot be displayed. The alt attribute give alternative information to user if user cannot view it for some reason because for slow connection, any type of error. And Google bots are also find it by Alt attribute. So it is come in search results. Write after the image alt attribute :- Alt="about images" , and save your setting on articles.
Image Title- Images title is also a good point to increases your search result. I mean blogger.jpg is better than image001.jpg, so write always title for images; you should get good result of visitor by it.
Make image better as text- Always post or upload image as like article. Because it gives a nice look for your blog and also nice visitor to your blog, so keep good images in your blog.
By the above point surely you will get good visitor result for your blog by your blogger images. So keep your images n your blog with nice posts.