-Place the cursor next to the text where the image is to be inserted within the email content.
-Click on the image icon within the WYSIWYG to upload the image.
-Within the Picture window select the image and choose an option from the Alignment drop-down (left, right) then click on the submit button.

You can also use this html codes if needed:

<div><img src="IMAGE URL HERE" align="left" /><font color="black">text here<br />
text here for new paragraph<br />
text here for new paragraph<br />
text here for new paragraph if needed and so on<br />
</font></div>
<p>