Welcome to the forums Dyl94! You can make an introductory thread
here.
Anyways, onto the deck.
You should try figuring out what your strategy is. Is it to rush the opponent and quickly get out creatures before the opponent can do anything? Or is it to control the opponent using CC (creature control) and PC (permanent control)?
Right now, your deck seems to be one based around vampiric healing. So, if you want to continue on that path, I'd say that you should drop all cards that don't help strengthen that core strategy. So, Psions, Immortals, and Quints don't help too much. You could try a deck build with 4 Fractals, 6 Minor Vampires/Vampires, a Nightfall or two, and some support cards like Steal, Dusk Mantle, etc. if you really wanted to.
But honestly, Minor Vampires usually aren't worth the trouble. Upgraded ones work rather well, but since you seem to only have one, that won't really be helpful. I'd recommend building a mono Darkness deck like the one on
this thread.