Connections. Experience. The thing I wish I learned earlier in my career: if you want to be the creative at an engineering company, or any non-core critical function at any org (sure you can argue you are critical but if you have to argue your job matters then, well) then you are likely needing to start somewhere else. Not a lot of entry level positions for creatives at nasa. Go start at an agency. Then go in-house somewhere else. Then, try nasa.