It is a good idea to get at least two quotes for the work and I can help with finding and choosing contractors, and very often oversee the making of a garden to completion.  

Once the garden is made, if needed, I am very happy to find a gardener and hand over the maintenance and care of the garden to them, and I am always available afterwards to visit, advise or help in any way that is needed.  I am still helping with gardens that I designed more than 20 years ago.