Resize Two YouTube Banners

I already have two polished banner designs in PNG format; they simply need to be resized so they look crisp on every screen—desktop, tablet, and mobile. Please stick to the standard YouTube banner dimensions... (Budget: €8 - €30 EUR, Jobs: Adobe Illustrator, Adobe Photoshop, Banner Design, Digital Art, Graphic Design, Image Processing, Photo Editing, Photoshop, Photoshop Design, YouTube)