I would like to offer my skills to volunteer in Nepal

It is a very complex situation regarding volunteering in Nepal at the moment. Since the earthquake we have suspended all of our (HandswithHands) volunteer postings, as it is simply too much stress on our local Nepali counterparts.

However if your wish to come and volunteer in some way with the rebuilding in Nepal is sincere then we can recommend two organisations:
1. Abari is an eco-building organisation that we are partnering with for rebuilding, they are offering a dedicated volunteer program: http://www.abari.org/rebuilding-nepal/
2. The other is an organisation that is specialised in managing volunteers after disasters and now has a current project in Nepal: http://hands.org/projects/nepal-earthquake-response/