LOw Poly Sand Desert !

I am building a sand desert for my game ! Its 5K poly and i want it to be realistic like the Desert from Battlefield 3: Bandar Desert !
what should i add to this…! the textures that i have used are a color map that i created procedurally,an Ambient Occulusion map and also Baked Normal Map from a high poly version of the desert to this low poly desert !

All textures are 2048x2048 .png format !
also i need to optimize it for better framerates ! any suggestion please ? :slight_smile: