Well done - good job!
First off - are you colouring with a mouse or a tablet? If it's with a mouse, I cannot express with words how much easier this digital colouring malarkey is with a tablet... it's amazing! Tablets aren't cheap, though (which is a shame) but if you are serious about it al, they are well worth the investment.
Now to the pic... your face proportions are fine - you've got everything 'in the right place', which is actually a very hard thing to do! When painting digitally, layers are the key. It look me ages to accept this (and learn how to do it!) but they really do help. To begin with, a background layer, a 'skin' layer, an 'eyes, nose and mouth' layer and a 'hair' layer will probably be sufficient. This means if you, for example, screw up her hair, then al you have to do is erase your mistakes from that layer, not the whole picture. It also makes building your colours, highlights and shadows up easier.
There does, however, seem to be a lack of highlighting and shading here - but since a lot of people are nervous of overdoing it at first (I know I was!) this is infinitely understandable. The best thing you can do is think about a face in 3D. What bits stand out? What bits would the light touch first? Answer is tops of cheeks, chin, and the tip of the nose. Reverse the principle for shadows... under the eyes, under cheekbones, under nose and under lips (top of the chin). Also, wherever her hair touches her skin, there will be shadows underneath it. (I can see by your sketch that you do this in pencil and that you have started to do this in the painting - just keep going and you'll be fine!).
Definition - if you're not already doing it, using a tablet will help here - it's hard to get a good, clean edge with a mouse. Tablets alos have pressure sensitive nibs, so you really can get a lovely effect with them.
Details - You've done a very nicejob with her lips. They are a lovely shape, and you've started to add highlighting in all the right places - well done! You could make this a very nicely sultry picture by moving her pupils under her eyelids a bit, so it looks like she is looking at you
I can see thatyou have added some 'struts' into the eye structure, though - that is very good. A lot of people forget that when painting eyes - irises aren't all one colour! Noses, however, are a bitch to paint (I hated noses for the longest time...) - I could go through how to effecively paint them (it's easier to show rather than tell!) but I'd be here all morning... again it's all about shading and highlighting. Same for her hair - add a bit of highlights to the crown and shadows to the 'undersections' and it'd be perfect (I still find hair hard to paint, though, and I've been at it for some time now!)
Please don't think I'm having a pop - I'm most definitely not - I think you've done a stirling job here, and you really have the talent to make some beautiful portraits. You should have seen my dismal first attempts at digital painting - this is waay better than any of them!
I actually have links to some awesome tutorials that have helped me infinitely - would you like me to post them up? (heh, she says... can she find them again? No-one knows...
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(And finally - do you realise how much she looks like my mod
NPC, Fade? It's uncanny!
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