Sleep is for the weak!

Goddddd I'm so screwed. I have to paint three, THREE landscapes by wednesday and I still haven't finished the first one ;A; I've never tried to paint a landscape before and this assignment is killing me. And on top of that, my Photoshop is not very cooperative at the moment, when I draw a line I have to wait few seconds before it appears  =A=" PHOTOSHOP, Y U NO WORK PROPERLY

This is what I have done at the moment:

 Yeaaaahhhhh SO SCREWED. The close-up on the only *cough* finished *cough* part:

Wish me luck.