Once the image is inserted into the post or page content, WordPress allows you to change the position of your image. You can either center the image or use left or right alignment to have your text wrap around the image. It can be easily done by using the left, right or center alignment icons in your Visual Editor.
First, place your cursor at the beginning of any paragraph in the Visual Editor. Then click the Add Media button above the editor and insert your image:
After your image appears in the editor, click on the image once, and then click either the left, right or center alignment icons to change the position of the image:
You can also resize the image within your WordPress editor: