Lords

Chaos lord
Giant blade
Nurgles rot
MON

Sorcerer lord
Chaos familiar
MON
Lvl 4
Dispel scroll
Stone of spite

Orghotts deamonspew

Heroes

Herald of nurgle
Exalted loci of contagion

Core

40 chaos warriors
Banner, champ
Shields
MON

30 plaguebearers
Standard, champ

Special

10 blightkings
Standard, champ

Rare

3 skullcrushers
Ensorcelled weapons
Standard, champ

2999 in total, what do you think. I've lost my last two battles with this list pretty badly, although I was against legions of chaos both times. What do you think i can do to improve it?

Thanks in advance