Ranking
I'll give my real .02 because I think you can take it.

Your self portrait is really flat. Just by adding a small amount of shading a preserving some highlights, and you could really bring some depth to that image. Other than that, your proportion is fairly decent, but your neck is super skinny... maybe it's that way in real life ;)

As for the abstract... well, abstract is abstract. However, if you draw to the edge of the page in all areas, it will make the piece feel more complete.

There ya go
Im actully doing a self portrait in art. Its being graded ATM so i will post it when i get it back.

NICE Drawing on the portrait. Mines a little better in my oponion, But still awesome 8/10
Want 1k event for doing something easy? check it http://forum.toribash.com/showthread.php?t=129460
I make like a few self portraits a day to practice my skills.
They all vary in quality depending on my additude at the effort I put in.
Do you ever use shading/Value?

To show the lighting etc., Im ganna post mine after i get it back from the teacher Its a self portrait
I had to stare in a mirror for like 5 hours. But i like the outcome
Want 1k event for doing something easy? check it http://forum.toribash.com/showthread.php?t=129460
Face is to Flat as everyones said before use alot of tone. More darker area's try completely cover the drawing in pencil then pick out highlights with a rubber.

For The Abstract Tbh, I dont like it , it just looks like my english jotter; full of doodles and random shit; Abstract needs a subject to it cant just be anything although many believe it.

So Post some upgrades or other works so i can follow your progress.