No need to walking, no need to looking. In this seed you will find lots of iron and diamonds blocks by digging down from the spawn. Keep digging down from the spawn like a images below about 5-10 blocks you will fall down to a cave system. In there, the first price is 6 irons blocks, but that isn’t all of your price. Continue the same path downwards in which you were mining before. And soon you will find the first diamond, but carefull if you doesn’t turn you aim straight up and plug the hole you will die because a lot of java will fall down to your head.
Seeds : 3015911 Work in PE ver0.10.0+ or ver0.10.5