Thanks to @ameliabartlett for encouraging us to participate here.

Here's our entry, the design is 100% our own and original work, it's also Steemit's day and nigth mode responsive, you asked for a 800x450 pixels dimensions but due thet we made it Adobe Illustrator it's fully scalable and usable for whatever you need it.

Thanks for the opportunity and the good job on the Steemit Community!