Classic Android Promo Graphic Needed

I need a single promotional image that says, in clear wording, “Download the app – SAVE 15% OFF.” The app is Android-only, and I want the overall look to feel classic rather than modern or minimalist. Essential elements • A prominent, easy-to-tap Download button is a must... (Budget: $250 - $750 USD, Jobs: Banner Design, Flyer Design, Graphic Design, Photoshop, Photoshop Design)