A5 sheet. This type isn't transparent, so it is possible to apply it to unpainted surface - final shade stays always same. Wooden structure is equal to 1/72 scale. Pasted/fixed/glued, puttied and polished model paint by base white (it is suitable to polish also this coloured layer before applying wooden decals). The decals are not transparent, so colour of the decal will be same after its application. Then cut required shape of panel (with 2 mm overlap) and apply as same as ordinary decal (use Mr. Mark Setter, Mr. Mark Softer). After these processes cut protruded wooden decal with very sharp knife.