I love the dyes and the mix of cool with fiery effects, its done very well. My only real suggestions are that while i love the feathered/flamekissed tops, I cannot find a leg slot that fits them well. the nice angles and bare midriff into just belts is not my favorite thing in the world. Im not saying it is impossible to find a leg combo that works well here, I just cant think of any that would work well. Finally, you have a lot going on in the leg area, and then you have essentially scraps up top. Maybe try balancing the "weight" of the armor (or lackthereof) and find some shoulder pieces, or possibly just find less busy legs. Looks great so far though, keep it up! I look forward to seeing the final look.
I agree with PrincessPoop, but mostly because I am just not a fan of those leggings in general - but to each their own! Everyone has their own style :) And I love the colours you have done. I think they accent the Bifrost fairly well, and that is not an easy feat by any means!