No proper image, because no one has survived seeing Val in her Aesir form, so just a rough sketch. Even the perspective here does not do the form justice- the tail is large enough that she can slither on it to get around or use the 50+ legs on its underside. Her stinger in this form is basically a serrated lance large enough to impale and pick up cars. The mandibles on her outer face are split (so she has 6 total in this form), and strongly resemble the chelicerae of a Camel Spider. The 'horns' are the rigid antennae of a giant centipede.

In her Aesir form; Valkyrie is 100% insane and will murder and destroy everything within visibility. Even if you shoot her- the bullets need to be direct impacts to crack her chitin; if the bullet hits her at even a slight angle, it will be deflected off her without doing any harm. She is giant in this form too- her Vanir form would only be at hip-height to her Aesir form.