I want to paint a floral mural on a wall in my daughter's soon to be playroom. Any suggestions?

I want big oversized flowers on one wall - a teal flower, a pink one and an orange one. I am thinking of painting gr myself, but was wondering if they had gr wallpaper. Also was thinking of another wall having a picket fence, but not sure how to make that on the wall. Any leads? Also, is this a bit much? I want an outside garden theme for the room. We've already painted the room a pretty sunshine yellow that looks so cheery and nice in the sun. I have teal and pink paint so far. Just want to make the room the cutest it can be. Also, do they have flowerprint lightswitch and plug covers? Who would carry these? Thanks!