Have posted several Vampire Count army list here, but i feel like when you get the first 500 point completely right you cant destroy it later on with new units, so here is a new go at a 500 point list, critique where you think needed.
Vampire Level 1 Wizard w/ Helm of Commandment, Dark Acolyte, Summon Ghouls, Nightshroud = 195
Corpsecart w/ Lodestoe / Balestone = 100
11 Crypt Ghouls = 88
14 Crypt Ghouls = 112
Total 495 pts.
The main setup is:
The unit of Ghouls with 14 stands in front of the other unit, where my Vampire is in, the first unit, get all the summoning, and is my meat shield from magic, arrows to charges, my Corpsecart rides to one of the sides, making sure my Ghouls Always Strikes First, with my level 2 summoning of Ghouls, and Helm of Commandment assistance for my first Ghoul unit they should be able to take on the most hardcore, Nightshroud is in case i lose my first unit and being challenged, i know my Vampire can fight just need him to hit first too

well put your 2 cents where needed and remember, a 500 pts. army will be getting bigger as soon i get my Ghouls up and running.
-Nemesis