Hi all
today i share easy but beatıful code
this code changed your signature style

{if {$Info['attach_reply']} or {$Info['attach_subject']}}

	{else}

	    

	{/if}

	

	{if {$show_sig} == '1'}

	<img src="your image path"/><br>

	{$ReplierInfo['user_sig']}

	</td>

	</tr>

	</table>

{/if}

ScreenShot
Sory my bad englısh