At Atelier Rosal, we consider ourselves the "caretakers of art". Good framing is about what's inside the frame supporting your work, as well as the aesthetic of the frame design.
Traditional approaches to framing (acid free mats, backing and UV glass) give your precious works a better chance of longevity. While other display designs (floating art on a board, plexiglass face mounting) are aesthetically pleasing, it should be taken into consideration the value and collectability of the art as well as the need for conservation. All of this can be assessed when the art comes in for us to inspect.
In general, we recommend the above frame designs (illustration "A" and "B" in the preceding photo) and their variations for framing of basic works on paper. The best practice is to keep glass off of art. The mat (illustration A) is more than a design aesthetic, but functions as a spacer between the art and glass. In illustration "B", art floating on a board can be distanced from the glass by the use of a spacer attached to the frame. Being that paper is an organic material, environmental changes (temperature, humidity, etc.) may affect the art that is touching glass as the glazing acts as a conductant. Traditional photographs with emulsion surfaces are particularly susceptible to damage when pressed against glazing, but the variables within the artist's medium, application of the medium and paper quality can have undesirable effects with other kinds of art as well.
Again, Atelier Rosal will inspect your work and give you options and recommendations on how to best conserve and frame your work.