Remember when we separated the conical-filled square that the fill remained intact for all four sections? We can modify the colors for each of the four conical-filled sections, and the 3D effect will remain as you can see. The colors in the squares represent the starting and ending colors for the Conical fill (in RGB format, for example 204, 255, 255 equals Red 204, Green 255, Blue 255). Select each section, then select the Fill Tool. The conical fill path arrow will appear (as illustrated here) and you can modify the colors by clicking on the end squares, then clicking the appropriate colors on the screen palette. Note that some of the top, small squares are different from the conical fill colors. I think you're clever enough to find them on the screen palette.
The Pointing hand icon is the + character in the Zapf Dingbats font. It's been flopped to make the left pointing hand). To make the postage stamp, create a rectangle and a small circle. Create a blend of two small circles, then make a duplicate of the blend. Convert the blend to Editable Shapes, (Arrange--Convert To Editable Shapes). Ungroup all the circles, then Join them (Arrange--Join) then position them over the rectangle and Combine Shapes--Subtract Shapes (Arrange menu). The next illustration shows the rectangle elements used to make the home symbol.