Common Beginner Mistakes and How to Avoid Them A frequent mistake beginners make when creating pressed flower glass art is mounting botanicals that are not completely dry. Any residual moisture trapped inside a sealed double-glass frame will cause mold growth and brown discoloration over time. Always ensure flowers press inside paper for at least two to three weeks until they feel crisp and paper-thin. Another common error is using excessive liquid glue, which creates visible smears on clear glass panels and saturates delicate petals. Apply micro-dots of clear gel adhesive or specialized botanical glue using a toothpick behind the thickest parts of the stem. Additionally, placing floating frames in direct, intense sunlight will cause natural petal colors to fade prematurely. Hang your botanical artwork on interior walls receiving indirect light to preserve vivid natural hues for years.