Once the design, price, and time frame for fabrication are agreed to, we can select the glass and begin the work. Although the glass samples in my software are a reasonable approximation of reality, there is a lot of variability in some glass. To complicate matters, several glass manufacturers have left the business, reducing the choices. Substitutions may need to be made based on what glass is actually available from local shops in a reasonable time frame and what looks good together and achieves the proper degree of transparency.
Transparency is difficult to assess with a computer, due to the difficulty of photographing clear glass and rendering it accurately on a computer screen. Additionally, the appearance of a glass sample can change greatly depending on whether it is lit from the front or back.
A small panel might be ready in a few days. Larger projects take longer. Some activities, especially cutting the glass, are fairly intense and may need to be spread over several days for best results. I can provide a reasonable estimate of a completion date based on your project, my other commitments, and my previous experience with various types of panels.