Well, the foam isnt exactly great, in fact it isnt foam, Ogre simply took the effect that squirts up from waves and made it into a single model, but sure, I guess if you use it correct you might make it look good.
Anyways, about the terrain. Personally I think it looks very.. static, and not very natural. You should work on making your rock formations look like real rock formations, and you should also consider using better rock models in general

I dont know what it is with people, everyone says that this rock pack from xgm is so awesome, personally I think there's like one or two rocks in that pack that are usable, but NONE that surpass the usability and good looks of the high res Felsen rock and steinlord rock.
In fact, a terrain like this is near impossible to make AND make it look good, I dont even think some of the most experienced terrainers could make such a terrain look very good, there is too much going on in such a terrain. and too little good models usable to illustrate it. So to that end, you probably did a good job.
I do very much like the background though
