Minecraft building guide

Here's one more chart/guide that has 19 different arches you can try

Minecraft building guides/charts - Album on Imgur

The firts is to create a circular frame that outlines all vertices with the largest circle (see example). After that is complete, you simply fill in the excess area with circles on scale with the layer that it is on. The second way is simpler, but generally less aesthetically pleasing. To do this, you simply create the smallest circle in the guide, and slowly build larger circles on top of it until you reach the circle you want as your middle point. You then start building juicier circles on…

Minecraft building guides / charts - Album on Imgur