I thought I would put up a list of the mediums I use to draw my portraits as I get a lot of questions from people asking what I use, so I thought this would be helpful. Paper
The paper I use is A3 Derwent Sketching Paper, 160gsm. It's smooth but not too much as I find that paper which is extra smooth is difficult to build up shading etc. Canson Bristol board is one of the papers I find too smooth, but alot of good artists here on DA seem to prefer it, so I suppose it's up to the individuals style of drawing.Wooden Pencils
I use Faber Castell. The one I have is the 9000 Art set, which ranges from H to 8B. I tend to stick to around 4B to 6B when drawing, using 8B rarely for very very dark areas.Menchanical Pencils
I use these almost all the time, I use them to sketch out the rough outlines as they can be very light, and also for finer details such as hair. The ones I have are Faber Castell 0.35, 0.5 and 0.7, which is basically just the thickness of the lead. I tend to use the 0.7 the most.Wooden Eraser Pencil
This is also Faber Castell, it's basically a wooden pencil but instead of graphite it has an eraser. It allows me to rub out very fine areas without making damage to existing work. Is particularly good for hair and eyes.Pentel Clic Eraser
It doesn't really matter what make these are as I have had many ranging from expensive to cheap and they all do pretty much the same job. It allows more control over which areas you are erasing things. Blending Stumps
These are brilliant for shading. They gather graphite so can also be used as a handy way of drawing without having pencil lines. They come in different sizes so are great for detailed areas of shading, which fingers somtimes are too large for.White Gel Pen
I use this at the end of my portraits to give the final touches of light in the eyes or hair, it gives more definition of white that an eraser can't always offer. Mine is a Hybrid Gel Grip DX, but I don't think it really matters as they all do pretty much the same job.Pencil Sharpener
I spent ages trying to find a decent sharpener, many that I tried broke the leds of my pencils all the way down, rendering the pencil pretty much useless. However this one doesn't. It's a Derwent one and is handy as it has its's own storage area for the filings.Kneaded Eraser
These are useful as they can be bent into any shape for fine or large areas of rubbing out. The brand is Faber Castell again.
I hope this helps any one who is looking for tips on materials and techniques etc. If you have any questions please don't hesitate to ask, I will be happy to help!