1. First, we need to prepare 10 Lego bricks. The color used to spell out the mecha can be chosen according to personal preference, but it is best that we use uniform colors to create a mecha with consistent inside and outside, which will be more harmonious and unified.

2. Then start from the bottom of the mecha and spell out four feet with three Lego blocks. Generally speaking, the height of these four feet should be consistent, so that the mecha has a good sense of balance, followed by the head. Here, you can spell out the outline of a head with three Lego bricks, and the color of the head is more obvious than other parts, so as to better distinguish it from other parts, thus making the whole mecha more interesting.

3, followed by the most important body, the body of the mecha can be zigzagged with three Lego bricks, which can be combined with the head to form the condensation point of the whole mecha. The details of the outline can also be laid out as much as possible, which can make the mecha more vivid and interesting.

5. Finally, the decorations of the mecha are placed. You can use a Lego block to spell out the arm or weapon of the mecha, and then the robot will be done.