First build the blue piece and mark the front on the inside. Then build the white ring and the brown piece and attach the brown part to the ring, simply put the hole of the brown part where the brown part already attached on the white ring is. Then glue the blue part on top, with the front being over the neck of the shell. The wings consist of 4 parts, the middle parts can directly be glued together, the triangle-like parts above and under them have to be glued in the holes of the middle parts. The 2 half-wings on one page belong together. If you have problems you can still use the reference pictures in the zip-file.