There could be a lot you can do, to get an idea and create strategy I would recommend why don't you research onto the other NGO's websites, their blogs, their social media channels. Look into what they are doing, do an competitive analysis for your NGO against others. Look into where you miss out and create the ground strategy, vision and approach. Your communicatioon, your designs everything should come from that vision & strategy. You will have enormous flow of ideas once you are clear how you wanted to position your NGO.
I hope it was helpful. And I would love to see your activities, I myself have worked with numerous NGOs while my college in Jaipur.
All the best.