First things first: Welcome to Dakkadakka!
Next, I would like to sugest the removal of the mold lines and leftover sprues from your models. The mold lines really ruin a good paintjob.
I did the same as you, my first necron warriors all have the mold lines and I hate it, but I was too impatient to paint them.
Just use the blunt size of your hobby knife to remove the mold lines and / or a file (not one for metals! That would just eat your model!). Files are also pretty good for the leftover sprue bit I see in some of your necrons.
Next, about the paint job, it doesn't look bad so far, but they could use some extra color to break away from all that shining metal! And some highlights aswell!
Here's one of mine:
To "break" all that metal, I decided to paint the "bones" in bronze, giving some extra detail and colors. And if you notice the "edges", they are highlighted with
GW's Ironbreaker layer paint. That makes the edges of the armor really pop.
About encouragement, well, never try to rush things if you aren't in the mood. I tried once before and it didn't work so well. It's better to do something else to recharge your batteries and then return. Listening to music / audio books / "Let's play" in youtube helps me a lot and I honestly can't paint without some background sound
Hope that helps a bit and again, welcome to dakka!