art background curves design floral flourish flower graphics leaf love nature pink plant stripes tree valentines vector wallpaper branch gray red winter yellow ancient architecture brick elements England english fig glass Great Britain historical history mullion old oxfordshire stone window green heart marriage spring summer abstract autumn dark forest fright ghost limbs long exposure night park peaceful Sardinia scare scary seasons trees white wood brown climb climber cover feed grow growth ivy large leaves life living network root Roots sap stem trunk wall