oppinions?

hey all.please view some quick drawings i did,bare in mind they are not my original designs,most of my original stuff is grafitti,paintings and sculptures so gota take more pics of them but for now may i have oppinions? please dont be rude and shitty to me,im not in the mood,but i do like honesty. the pic with the koi and skull aint fin yet,the eye on the devil needs fixin i know and sorry the pinups a bit blurry. im currently doing as much research and practice as i can to improve my drawings.i always try to improve.any advice on building a good portfolio would be greatly appreciated. http://s578.photobucket.com/albums/ss227/kink2/th_Image019.jpg http://s578.photobucket.com/albums/ss227/kink2/th_clown.jpg http://s578.photobucket.com/albums/ss227/kink2/th_maskneedsbackground.jpg http://s578.photobucket.com/albums/ss227/kink2/th_warriorwoman.jpg http://s578.photobucket.com/albums/ss227/kink2/th_nursepinup.jpg http://s578.photobucket.com/albums/ss227/kink2/th_japdevilinprogress.jpg http://s578.photobucket.com/albums/ss227/kink2/th_inprogress.jpg