kk650, overall I think your color grading is very good; I'd prefer a little bit of saturation less, but it maybe only my personal taste; white balance is OK to me.
There is only a problem in the final shot of the spaceship; it changes color grading in both your clips - don't know if this is present in the original source, or is due to the color grading.
I like it, you are close, go on!!!