First of all, you need to prepare raw materials: balloons, water pipes, bases, and some ropes. The water pipe we are talking about here may be bent to a certain extent and made into an arc.

2. First of all, we need to do a general arch support. We need to make a "U" shape with water pipes according to the size of the arch. After filling the two bases with water, insert the water pipe into the bases. We usually use cement instead of the base, which can be stronger and less prone to breakage.

3. Next, we will blow up balloons and tie them together to form a pair of balloons. Blowing balloons should be challenging. It's actually very difficult if you don't touch special equipment or ask friends for help. To tie two balloons together, the size should be similar, and the seemingly simple operation is also difficult.

4. We need to cross the balloons. The two groups of balloons cross well, match the corresponding colors and have a general layout. As for how to match his colors, he can generally match similar colors to make the overall feeling more harmonious visually.

The next step is to tie the balloon to the bracket. In this step, a group of balloons need to be wound around each other with the help of ropes, and all around them are covered with balloons along the bending direction of the water pipe, thus completing the basic framework.

6. Then we arrive at the meeting place. We need to wind the tied balloon around the base for a week, so that our U-shaped arch and base are covered with balloons. Here, we have completed a balloon arch.

7. In the last step, we need to make the whole balloon arch more exquisite and perfect, so we need to add some other decorations to make our things more distinctive and attractive. As for what to choose on the balloon? According to the actual situation, you can add some small toys and other different types of balloons.

After reading these basic steps, in fact, we all know that the balloon arch is difficult to do well by one person. So if conditions permit, I hope everyone can find their friends for help as much as possible.