NOVELTY - The method involves forming a bit body (210) comprising exterior surfaces (250) and an interior region. A pattern of features supported by the body is formed by forming a feature and forming another feature spaced from the former feature by two widths at two elevations, where one of the widths is different than the other width and one of the elevations is further from the region than the other elevation. A hydrophobic coating (280) is formed over the pattern, where the former feature comprises forming a cavity and the latter comprises forming another cavity spaced from the former cavity.    USE - Method for forming a coating upon a wellbore tool e.g. earth-boring rotary drill bit, downhole motor power section and sensor such as acoustic transceiver, formed in a subterranean formation for extraction of oil and gas from the subterranean formation and extraction of geothermal heat from the subterranean formation.    ADVANTAGE - The method enables providing short contact of wellbore tools with pressurized fluids and debris while drilling, completing, testing, stimulating and producing or remediating the wellbore such that surfaces of drill bits, drill strings, tool string and components are not damaged, thus avoiding corrosion and premature failure of the components and reducing costs associated with removal and repair or replacement of damaged components. The method enables forming coatings on the wellbore tools to protect the tools from harsh environments in which the tools are used and to enhance an interface or operative connection between two tool surfaces.    DETAILED DESCRIPTION - The body is a solid body, a wall, a floor, a housing and a layer. INDEPENDENT CLAIMS are also included for the following:    (1) a wellbore tool    (2) a method for utilizing a wellbore tool in a subterranean formation.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of an earth-boring tool comprising a rotary fixed-cutter drill bit that includes a coating.    Earth-boring rotary drill bit (200)    Bit body (210)    Blades (220)    Exterior surfaces (250)    Hydrophobic coating (280)