A stretcher frame apparatus and methods for stretching and mounting a fabric, such as canvas, to a supporting surface, such as a wall. The apparatus has two opposing elongated frame members that are attached to opposite sides of a fabric. When the frame members are first mounted to the wall, the fabric will have slack, but the fabric is made taut when the user inserts removable elongated tension member(s) between the wall and rear side of the fabric. Preferably, two tension members are inserted between the wall and the mounted fabric and then slid in opposite directions toward the mounted frame members. This apparatus and method allows a user to forgo cumbersome four-sided box frames, and instead provides a simple, easy to use apparatus for mounting decorative fabric-based images to a wall.