A great formal look starts with measurements and a clear plan for any adjustments.
The jacket shoulder should sit close to your natural shoulder, without a strong overhang or pull.
You should be able to button the jacket comfortably. Watch for pulling across the front.
Sleeve and trouser length shape the whole look. Bring the shoes you plan to wear when checking the hem.
Hems and small waist adjustments are common; shoulders and jacket length can be more complex. Try on the full outfit well before your event and allow time for adjustments. Any Checkmatela tailoring service, cost or turnaround will be confirmed before an order is placed.