As we countdown the last few days before the start of Comic-Con 2010, we have some early artwork from two of the event’s headline titles – Marvel’s upcoming movie adaptations of Captain America: The First Avenger and Thor.

The first image showcasing Chris Evan’s suit in Captain America was released last month, but this new hand-drawn poster offers a significantly more detailed look at the iconic costume.

Evans spoke out about Captain America’s new look a few weeks ago – but this piece of art should really help comic book fans visualize how the suit will look in action.

Personally, I was never really taken with the character’s classic look (especially the tiny wings on the helmet). However, I can’t imagine dedicated Captain America fans getting discouraged by the new concept artwork. The image certainly positions the film version of Captain America as an extremely capable, superhero soldier.

Check it out below (click on the image for a hi-res version):

A similar piece of concept artwork  has also been released for Thor. While we’ve definitely seen a number of images of Chris Hemsworth as Thor, the new image definitely gives a strong sense of how the character will look in action – instead of posing.

Some fans might still not be sold on Thor’s missing helmet but I think (judging by this new picture) that it might actually be a cool choice. If Hemsworth is able to duplicate the concept image, swinging his own prop hammer version of Mjolnir with the same authority, then I imagine he’ll be convincing as the warrior-son of Odin.

Have a look for yourself (click on image for a hi-res version):

Keep checking back in throughout this week as we report on all the big Comic-Con-related information and announcements concerning films such as Captain America and Thor.  Stay tuned to the Screen Rant Comic-Con 2010 Page and follow us on Twitter (@screenrant) for the latest.

Thor arrives in 2D and 3D theaters in the U.S. on May 6th, 2011.

The First Avenger: Captain America will also be released in 2D and 3D theaters in the U.S. on July 22nd, 2011.

Source: Yahoo! Movies