Hi G! Home Sweet Home! I'm sure your family must be excited your home. I wish them my best. So you obviously was busy on your flight. I agree with Phil, what a task to draw at 35,000 feet. I would have been blowing charcoal dust all over everybody. Anyway we have a drawing to look at and a very tough one at that. This is very deceiving picture to draw, Mrs. Indira Gandhi has a head tilt, three quarter profile and she's looking to the left. REALLY TOUGH!!!
It's hard to comment on the tonal range because the scan is so dark. I can tell your blending is coming along, just remember Contrast! Darks and lights. keep it balanced and you will be fine. What I'm seeing with the mouth is that it looks like you've drawn it straight as if she is looking right at you with no head tilt, there is no angle to her mouth, it looks like it may need to turn a couple of degrees counter clockwise. the lips need some more tone. In the corners of her mouth there should be some more shadow, the middle of her upper lip and lower lip there are some nice highlights that need to be added, that should give them some nice shape.
You've nailed the nose. Nice job!
I can't really see a lot of the eyes on my monitor so, no comment. (sorry)
The rest looks great!
I've reattached the original and you rendering together below, I tried to brighten it in photoshop. Maybe this will help you understand my critique better.
Enjoy your day!
Marc Forest.
http://www.marcforest.com