Prom or Wedding Guest Dress

I purchased this but felt like I was cosplaying a 12 year old. And did not like how my bust looks in it. In the video I have an underskirt on that I purchased from SHEIN to make it a little more poofy. That underskirt is not included. Different string to lace up the corset. I think it would also look better on someone with either a bigger bust than me (I’m a B cup). I paid $65 plus like $30 for fast shipping, can’t return it so just trying to get something back for it since I never wore it. $50 with free shipping. It is new, never worn, but did not come with tags. This is cross posted.