#84 - logos above text are not going to work on a certificate, so this one will have to go
#78 the white line going through the text, i think will give a view that there is something wrong with the print, and this would not be good for certification
#85 not too keen on this logo
the other 3 are ok
#77 might do better with a little more colour - how about making the middle horizontal part of the letter F red to match the letter E ?