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On the Formatting toolbar, find Border icon. Click on the arrow next to it and choose Horizontal line from the selection.

If you want to change the Text wrapping,right click the picture and choose Format Picture. Go to the Layout tab. Click the Advanced tab.

On the Formatting toolbar, find Border icon. Click on the arrow next to it and choose Horizontal line from the selection.

If you want to change the Text wrapping,right click the picture and choose Format Picture. Go to the Layout tab. Click the Advanced tab.

Regarding the line:
1) Menu: Format-> Borders and Shading, Borders tab, click a line button. In the Apply to section: select paragraph. In this case a paragraph is a blank in the document where you want your line to appear. This line will stay the same size as the margin widths of the page.

Regarding the picture:
2) Right click on the picture, select format picture, layout tab. The options square and other will give you the most common flexibility as you will be able to drag the pictureanywhere as needed.

Type three dashes and press [Enter]. Word will replace the three dashes with a margin-to-margin line that will adjust to new margin settings.

Type three dashes and press [Enter]. Word will replace the three dashes with a margin-to-margin line that will adjust to new margin settings.