sheet comes in to size of 21cm*29.7cm as shown in last image. Easy to install just peel and paste on wall by arranging design like puzzle. Step 1: Preparation & installation The surface you wish to attach your decal to must first be clean and free from dust grease or any other contamination. Freshly painted or lacquered surfaces must be allowed to completely cure before the decal is applied. We recommend waiting a minimum of 2-3 weeks. . Step 2: Peel and Stick Simply peel those wall stickers off from backing paper and apply them on the design area. Step 3: Press Press firmly to squeeze out any air bubbles. Grab a cloth and give wall sticker few wipe down to ensue each wall sticker is firmly stick to the surface.These wall stickers decorate your home just in minutes. Easy installation. The surface you wish to attach your decal must be clean and free from dust, grease or any other contamination. Simply peel those pre-cut pieces of wall stickers off from the backing paper and apply them to the desired area. Refer to the finished design shown in between the sheet and follow the numbers mentioned on the pieces to form the desired pattern. Freshly painted or lacquered surfaces must be allowed to completely cure for minimum 30 days before the decal is applied. After pasting the wall stickers on your wall, press firmly along the border and remove air bubbles if any. Repeat, if required. Do not apply on wet walls. It will be helpful and fun if you take help of your friends or family members. Ideal for family lounge, hall, bedroom, cafe and restaurant, kids room, nursery room etc. Make sure the wall surface is smooth, free of moisture, dust and dirt. Gently and carefully peel out the pre-cut pieces. Follow the numbers mentioned on the pre-cut pieces and join them to form the pattern. Press firmly along the border of the wall stickers to ensure no loose edges. Voila! You did it. If you notice any air bubbles, you can use a pin or needle to prick and squeeze out the air.