sql query questions

Guys,
I have a query below to list fr me a table with the row count and its size, btw would someone help me how do I sort this query output with the highest table  on top ?

SELECT [Table Name], (SELECT rows FROM sysindexes s WHERE s.indid < 2 AND s.id = OBJECT_ID(a.[Table Name])) AS [Row count], [Total space used (MB)] FROM
        (
        SELECT  QUOTENAME(USER_NAME(o.uid)) + '.' + QUOTENAME(OBJECT_NAME(i.id)) AS [Table Name],
                CONVERT(numeric(15,2),(((CONVERT(numeric(15,2),SUM(i.reserved)) * (SELECT low FROM master.dbo.spt_values (NOLOCK) WHERE number = 1 AND type = 'E')) / 1024.)/1024.)) AS [Total space used (MB)]
        FROM    sysindexes i (NOLOCK)
                        INNER JOIN
                sysobjects o (NOLOCK)
                        ON
                i.id = o.id AND o.type ='U'
                --((@include_system_tables = 1 AND o.type IN ('U', 'S')) OR o.type = 'U') AND
                --((@include_system_tables = 1)OR (OBJECTPROPERTY(i.id, 'IsMSShipped') = 0))
        WHERE   indid IN (0, 1, 255)
        GROUP BY        QUOTENAME(USER_NAME(o.uid)) + '.' + QUOTENAME(OBJECT_NAME(i.id))
            --order by [Row Count] desc
     

        ) as a