Is there an Institute to certifiy my healing powers in my hands?
Anyone can heal. There are a whole range of healing schools who can give you a curriculum to follow and develop yourself ranging from weekend Reiki to 3 and 4 year courses – http://www.barbarabrennan.com and http://www.energyhealing.co.uk/ But the real certification is to just do it. If you practice on people you will find your own way. The results are your validation. Learning to channel for guidance might be a very good idea.