Movie poster? Book cover?

Here are a couple sample pieces I've been working on in spare moments. We have a '60s blockbuster movie style poster, "Sword of the Valkyrie". Sword wielding vixens versus evil WW1 style robots! Also a sample for a nonexistent book, "Texas Cowgirls". Hmmm. Maybe a coffee table book!

Super Heroine

When the asteroids are about to destroy the Earth, you'd better hope this super gal is there to protect us with her plasma balls! Or something to that effect. I was trying to think of a name for her but most of the good ones are taken. Plasma Girl?.... I dunno. Nope, it's taken.