Refine One-Page Landing Aesthetics

I already have the copy and general layout of my single-page landing finished; it just doesn’t have the crisp, bright feel I’m after. I need a quick design touch-up focusing on three things—images, fonts, and colour—so the whole page pops without looking busy... (Budget: $12 - $30 SGD, Jobs: Figma, Graphic Design, Photoshop Design, Web Design, WordPress Design)