Noob needing help! [Landscape Texturing]

Heya, essentially I am trying to do what this guy is doing in this video here Texturing a Landscape in UE4 (Unreal Engine 4) - YouTube but with these textures http://puu.sh/hDtny/e34668bba7.jpg http://puu.sh/hDtpn/aa1a4144bb.jpg but all I ended up with was this http://puu.sh/hDtri/7c61f119a2.png and its just black in the preview :frowning: