i looked in this earlier but had to go so now il leave ya the cnc.
Ok here goes:
your new one that you hav made is nice the only problem i may hav with it is that the colours don't much, mayb add a colour balance layer?
for the others the backgrounds seem a lil repititive but thats alright you'll get better as you keep designing. And last thing the text well I wud say don't use any of the drop shadow stuff it makes ur sigs look newb and most of the time looks better without, also work on makin the theme of the sig suite the text.