Start with a pair you actually enjoy wearing. Record its model, printed measurements, shape, and color. Then list one thing you want to keep and one thing you want to change.
Save three candidates rather than dozens. Open the comparison tool and compare dimensions, materials, and photographs side by side. A familiar silhouette is a useful starting point, but photographs alone cannot confirm fit.
Look at each available color photograph. A clear frame and a dark frame of the same model can look quite different. Match the selected color name to its photograph before configuring lenses.
Before paying, confirm stock, the chosen color, prescription suitability, and the complete estimate. Keep your current pair available until the new pair has arrived and you have checked it.