This could be a great scene. Love the angle and love the scene.
(I’m not good with particles, but I’ll give you some other advice)
You need to change the composition a bit. Smacking the lighthouse right in the middle is not going to work for a landscape shot (It could but depending what you do with the scene, it could look boring composition wise). Well, yours is not really totally in the middle Move it to the right or left - usually the rule is 1/3. Let the beam shoot over a landscape. It will help the eye drift off into the seascape/landscape.This scene really wants some drama!
Also make sure you place some very dark brooding clouds or fantastic HDR type light streaming clouds (Google for HDR clouds, landscapes).
You can even go for a morning or late afternoon yellow/reddish look. Make sure the sun is not on the scene but outside and you only see the glow. The light should strike the lighthouse from a angle and really light it up, instead of a silhouette when you place the sun behind it. Just a suggestion, I’m getting too carried away now… I think I’m a bit inspired by the scene
Also, texturise the lighthouse bottom that it looks really worn and weathered from the beating waves. In fact the whole lighthouse should feel used and batterred (not cracked and broken!)
It all depends on your timeframe of course… but with good particle effects I think this scene will really shine - hope someone else could help you there.
Best of luck!