Posting pictures to a blogspot blog
Blogger now has an easy way to post pictures to your blogspot blog. There is an icon in the posting window that you can click that opens the dialog box to do so.
All the help you need is on blogger help
The left, center and right options will determine how the text of your post flows around the pictures. This size option lets you scale the pictures to different sizes within this posting area. Note that the picture will still be uploaded in its full size; this option just determines how it is scaled within the content of your post.
I posted this picture using this process.