Adding Certain Profile Fields to Member Card

Admin CP -> Appearance -> Templates -> member_card

Add the red code near the bottom:

Code:

		<xen:if is="{$canViewOnlineStatus}">
			<dl class="pairsInline lastActivity">
				<dt>{xen:phrase x_was_last_seen, 'username={$user.username}'}:</dt>
				<dd>
					<xen:if is="{$user.activity}">
						<xen:if is="{$user.activity.description}">
							{$user.activity.description}<xen:if is="{$user.activity.itemTitle}"> <em><a href="{$user.activity.itemUrl}" class="concealed">{$user.activity.itemTitle}</a></em></xen:if>,
						<xen:else />
							{xen:phrase viewing_unknown_page},
						</xen:if>
						<xen:datetime time="{$user.effective_last_activity}" class="muted" />
					<xen:else />
						<xen:datetime time="{$user.effective_last_activity}" />
					</xen:if>
				</dd>
			</dl>
		</xen:if>
		<xen:if hascontent="true">
			<dl class="pairsColumns lastActivity">
			<xen:contentcheck>
				<xen:if is="{$user.customFields.field_id}">
					<dt>Field Name:</dt>
					<dd>{$user.customFields.field_id}</dd>
				</xen:if>
			</xen:contentcheck>
			</dl>
		</xen:if>
	</div>
	
	<a class="close OverlayCloser"></a>
</div>

You need to specify the field_id of the profile field, and type in the Field Name to give it a label. You can add more instances of the blue code inside of the red code to show multiple fields.

The result: