I love it, the perspective and the movement make it so spectacular and eye-catching!
But I wonder why people use the modern flags that we use nowadays instead of the old ones from the era you are cosplaying... please take it as constructive criticism ^^ Though I know sewing flags is difficult and expensive of course!
I am sorry for such late reply, I am not so active these months around DA!
About the flags: the one you are showing me is american, ha ha ha ^^
When you want to cosplay "historical Hetalia" the best thing to do to find your matching flags is to go to wikipedia, search for the period or battle you are cosplaying, and see what was the flag back in the day. Like here in this case: [link]
In this case, the correct Spanish one is this one: [link]