Let's begin. Glue the first sheet with Alkyl, starting with the rigid base that we have chosen. The surface has to be greater than the surface on the sheet which we are going to work on. Add a small amount of Alkyl to the front side of the sheet.
Put the brush in the Alkyl, be careful not to put too much on the brush.
Glue the rear side of the sheet carefully with Alky. Don't use too much glue and make sure you only use it on the necessary parts.