We can insert the signature whose images you will align into an email, and then align or float its images with the Wrap Text feature in message body.

1. In the Mail view, click Home > New Email to create a new email.

2. In the new Message Window, please click Insert > Signature, and then click the specified signature whose images you will align from the drop down list. See screenshot:

3. Now the signature is inserted into the message body. Right click the image you will align, and select Wrap Text and any one of wrapping styles from the right-clicking menu.
In my case, I select Wrap Text > Square from the right-clicking menu. See screenshot:

And then move text paragraphs and the image until they align well.

4. Copy the whole signature content with selecting and pressing the Ctrl + C keys.

5. Click Insert > Signature > Signatures.

6. In the opening Signatures and Stationery dialog box, please:

(1) In the Select signature to edit section, click to select the signature whose images you will align;
(2) In the Edit signature section, remove original signature content, and then paste new content with pressing the Ctrl + V keys simultaneously;
Note: After pasting, the aligned image may disappear in the Edit signature section. Please not worry, it will display normally when inserted into emails.
(3) Click the OK button.

7. Close the new email without saving.

Demo: Align or float images in Outlook signatures with Wrap Text feature

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Sometimes, it might not meet you need by aligning images with the Wrap Text feature in Outlook. Actually, you can also align images in Outlook signatures with a table.

1. In the Mail view, click Home > New Email to create a new email.

2. In the new Message Window, please click Insert > Signature, and then click the specified signature whose images you will align from the drop down list. See screenshot:

3. Now the specified signature is inserted into the email body. Go ahead to click Insert > Table, and then specify the numbers of table columns and rows as you need in the drop down list.
In my case, I insert a 2x1 table. See screenshot:

4. Move image into one column, and move all text paragraphs into the other column. See screenshot:

5. Select the whole table, right click and select AutoFit > AutoFit to Contents from the right-clicking menu. See screenshot:

6. Keep the whole table selected, and click Format Text > Table > No Border.

Make any adjustment as you need. And then replace the original signature content with the new table by steps we introduced in the first method.

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