advanced critique encouraged (new: comic)

[Ryjia]

Hello everyone.

I'm aiming to improve, like any other. I'm still in my teens, so there's a lot of space to do that.
I practice like mad of course and try to figure out a lot by myself, but sometimes I need the help of others. You know, like a neutral party to judge my skills. I need you to point out the mistakes I can't find. What is good, what could be better and where are my problem areas.
I try to practice on as many styles possible, so you can find very different drawings from me.

In trade of an advanced critique I'm willing to critique your art too, if you'd like.

So here's some of my art I'd like to be criticised.
(realism/traditional)
[b][url=http://www.fanart-central.net/pic-702762.html]Johnny Depp[/url][/b], in the role of Sweeney Todd, because who doesn't like him? Pencil work.
[b][url=http://www.fanart-central.net/pic-702765.html]Selfportrait[/url][/b], me! Pe cil work.
[b][url=http://www.fanart-central.net/pic-708535.html]Leo[/url][/b], acryl painting on canvas.
[b][url=http://www.fanart-central.net/pic-708537.html]Scorpio[/url][/b], acryl painting on canvas.
(cartoon/cg)
[b][url=http://www.fanart-central.net/pic-704026.html]Stop it[/url][/b], Rei Yui, colourful punk girl with an attitude.
[b][url=http://www.fanart-central.net/pic-704019.html]Content[/url][/b], Ryjia, Character of mine, enjoying the sun.
[b][url=http://www.fanart-central.net/pic-704023.html]The Pilot[/url][/b], some random girl with neat glasses.
Of course, if you find something more interesting in my gallery to criticise it's welcomed.

[Ryjia]

If the critique really helps me I could doodle a nice thank you pic too.
Please, I need this.

[TyrannicalTilly]

I can critique! Yay!
omw.

[Ryjia]

thank you for the critique


here's some more if people are interested

(realism/traditional)
[url=http://www.fanart-central.net/pic-721072.html]Fortune Teller[/url], a gypsie like character, acrylic painting.
[url=http://www.fanart-central.net/pic-709667.html]Johnny Depp[/url], yes again.... This time in the role of Mort Rainey. Pencil work.
(cg/cartoon)
[url=http://www.fanart-central.net/pic-720426.html]Salem von Köln[/url], fantasy character.

And as a bonus a comic!
[url=http://www.fanart-central.net/pic-720602.html]page 1[/url]
[url=http://www.fanart-central.net/pic-720603.html]page 2[/url]
[url=http://www.fanart-central.net/pic-720605.html]page 3[/url]