Thanks for doing this, @Nola_Applequill1, I really appreciate it! 
Would it be possible for me to post another set of references photos for you to use in the banner? I have another outfit in mind that I think might go better with it. I wanted to check with you on that first, and then I can post my ideas on the theme/background to complement the colors of the outfit!
For the size, a banner would be perfect! Do you use layers? I have to resize the banner to fit two different measurements, so if there’s a way for me to get a copy of the design against a transparent background, and then the background by itself, that would be great! If not, that’s okay too!