I would suggest swapping out the Skulltaker, for a regular Herald. Then lower the amounts of Juggernauts too, maybe to Three? Basically, you need more troops. 7 Bloodletters will die pretty fast, as will your Horrors.Maybe try
HQ: Herald of Khorne on Juggernaut, Fury of Khorne, maybe some other upgrades. Fateweaver (He is powerful, but man, he is expensive in 1000.)
Elite: Two Bloodcrusher's on Juggernauts with Icon.
If I remember right, this should be below 1000m and you have rooms for Upgrades. If I'm honest, you need more Anti-tank. Those Hellblades are useless if all the nice squishy infantry is inside a Rhino or other Vehicle.
I would say take out fateweaver as he is too expensive for 1000 ponts. Your main problem is not many objective holders. I would suggest getting some plaugebearers if you can.
_________________ Plague for the plague lord!!! Buboes, phlegm, blood and guts! Boils, bogeys, rot and pus! Blisters, fevers, weeping sores! From your wounds the fester pours. 4000 points of mono nurgle