research drawings

Hellboy
the cover for Hellboy has an interesting look to it though  it is simple it makes Hellboy stand out being the only thing in colour
so it will attract attention the image is quite dark showing that death may occur. also the fact he has cigarette in his mouth shows that he isn't a nice person even if he is the protagonist
the skull in the background shows   that pain and death is in the story.they probably made this image by drawing it by had and refining the image in Photoshop or producing the full comic by hand they had more than likely drew the parts the was not black and the outlines and filed in the back ground black with photoshop.

                                 Conan the barbarian

this is the cover for Conan the barbarian which seems that it is
the protagonist on a ghost ship at night what seems like he is lost . and the skull in the background suggests that he will die.
they probable used liquefy tool and reducing the opacity on the skull  as well as to make the smoke you could paint the smoke with a soft brush tool and lowing opacity in layers.
the colours in the cover suggests death and pain by the lack of bright colours. as well as his face being emotionless this looks like it was hand drawn and edited slightly or drawn with a tablet .the lines are used to a minimum and shading is used to give majority or detail








colder
colder's cover is a rather grotesque image that uses a small amount of line in the drawing a lot of the detail is in the shading and colours the gruesome detail in the right  side of the face with the blood dripping down the face and hand this image the blood could have been made by using a dark red and lowering the opacity the rest of the image would have been hand designed and scanned the image into Photoshop and add the  colour and title . the images tones make it darker