First I'll need to see the space either through a texted or emailed photo, or if the space is large and the mural will be be more complicated than being on one wall, I may come out and see the space in person. For most murals all I need is a photo and measurements of the space.
Second I'll ask what style of mural you're looking for. Pictures of examples are really important to the process. Your idea of a "space mural" is going to be different than my idea of a space mural! Also if you are working within a budget please let me know. If I'm starting a design from scratch I can design a mural that will cost $400 or a mural that can cost $4000, so setting perameters is important.
Next I'll create a rendering and can photoshop the mural into a picture of the room. It is at this point that I can give you a solid price for the mural. There are a lot of factors that can effect cost so unless I know what image I'm painting, I can only provide a price RANGE and not a solid quote.
If everything looks good we'll schedule a start date and time.