Daww Cass! I actually think she has the coolest outfit of them all! I like how you drew the misty/snowy background. Nice atmosphere and setting. I also like how her cape is flapping in the wind. Nice touch! I'm really behind with commenting on your awesome drawings, but I'll get there with time! Keep up the good work!
You can't directly respond on tumblr. You have to either copy and paste a comment into a new post and then add your response. Or reblog their reblogged commentary with a response. It's really set up more for reblogging and liking, rather than comments.