I would recommend doing up a lot of basic gardens, and then bringing along a few of the higher end gardens. Also, yes bring lots of pictures of other gardens you have done along with business cards for 'custom orders'
Also, on parts and materials (ie water pump etc) here in CA acceptable markup is 50% so basically, take what it costs you in total materials to make the item, mark that up 50% then add your labor cost
Good luck in your sales! and please let us know how it goes!!
