Not bad, It's good. However you may benefit from varying the weight you put on the charcoal.
Few portrait drawing hints. If you are working from a photograph try not to use anything photo which has been taken with a flash, casting light directly onto the subjects face. It causes no subtle shadow on his/her face which allows no chance for you as the artist to detail in any difference's in light and dark. And thats no good as that's where the definition and shape of the subjects face will most likely come from.
Materials make a difference too, so make sure you use the right paper (something heavy), nice charcoal (or pencil) and definetly get yourself a putty rubber, so you can lift charcoal or graphite off and put light into your work. Some people even use white chalk at times. If you are struggling to get dark and light definition from a colour photo, scan it in photoshop and make it black and white. This will help you know exactly what tone it should be. It's not cheating, its an aid. Some people (as can be seen here) draw grid squares, or use squared paper to help them judge what should be where. The photo they work from may also be seperated into squares to help them judge. Look at angles too, use your pencil to point out an angle and then put that angle on your paper. It helps judge distancing. Also, if you want to draw attention for a female, make everything quite light, and then when it comes to her eyes really work on them, it makes the viewer drawn to the portrait. Drawn to her eyes like shes staring at you.
The example im showing isnt the best, but I picked it as it wasn't amazing, but an achievable stepping stone you could aim for.
Good Luck!!
