com.megaphonetech.ftoverride/templates/CRM/Contribute/Form/ContributionMain/common.tpl

<div class="crm-public-form-item crm-section ft_override_designation-section">
  <div class="label">{$form.designation.label}</div>
  <div class="content">{$form.designation.html}</div>
        <div class="clear"></div>
      </div>
{literal}
<script type="text/javascript">
  CRM.$(function($) {
    $('div#priceset:first').after($('div.ft_override_designation-section'));
  });
</script>
{/literal}