The three-dimensional birthday card is made as follows:

1, take a light blue A4 cardboard, cut off a part of the length and width of the paper, and fold the leftover paper along the center line. Place the paper across the center line and draw the lines of the three-layer cake upwards.

2. Cut both sides of the first layer of the cake, then fold the marks upward along the horizontal line, open and then sink the fold inward after folding. Then cut the second layer of the cake on both sides of the line, fold upward traces and then open to the inward fold, then cut the third layer of the cake on both sides, fold upward traces and then open to the inward fold, open the cardboard a three-dimensional shape of the cake is done.

3, take a piece of white cardboard, cut out three sections and cake three layers of the same length of the wavy strip. Glue the strips on top of each layer of the cake.

4. Take a piece of pink cardstock, fold several layers at random, cut out many small circles, and use the rest of the paper to fold and cut out some triangles. Take another piece of rose cardstock and cut some more of the same circles and triangles, following the pink circles and triangles.

5, in the third layer of the cake glued in four pink circles, the second layer of the cake glued in three rose red circles, the first layer of the cake glued in two pink circles, and then the rest of the circle randomly glued around the cake embellishment, will be triangles color cross glued to the top of the cake to make a colorful flag.

6, with a red pen in the bottom of the cake written happy birthday. and then take a blue A4 cardboard folded along the center line, will have the cake cardboard folded and glued in the middle of the blue cardboard. Open the card is a beautiful three-dimensional cake, so a beautiful three-dimensional birthday card is done.