Picket Fence Styles
The basic design has same-sized pickets for the entire length of the yard. You can have alternate pickets in lower levels than the rest of the pickets. This will form a great looking pattern. For your garden, you can have the pickets arranged in a manner such that the fence line forms a concave top shape between two posts.
Similarly, you can choose variable-sized pickets and arrange them in a way to form convex shaped fence lines between two posts. The arched picket top shape between two posts is very popular and looks classy. Alternating design patterns between every two posts is also a great idea.
While the top edge of each picket is usually straight, you can have it in one of the designer patterns and add spice to the simple fence. You can have these in an inverted 'V' shape so that the edge is pointed or in a diamond shape. Curved, semi-circle, or other designer shapes can also be considered.
To build the fence, you can either get individual pickets, horizontal support slats and posts, or you can also buy pre-milled fence sections which are easier to install. These types of ready garden fencing panels are quite popular for DIY projects.