paint dark covering grey trouble decorating

Hey guys, I've been researching painting as I'm new too it. But my wall is defeating me. It's taking about 5/6 coats of paint. I was using armstead trade then my top coat. I've tried using a primer / undercoat (nonosense) but takes around 3 coats and is patchy still. I'm using medium pile...

Hey guys, I've been researching painting as I'm new too it. But my wall is defeating me. It's taking about 5/6 coats of paint. I was using armstead trade then my top coat. I've tried using a primer / undercoat (nonosense) but takes around 3 coats and is patchy still. I'm using medium pile...