This design, charted by Sandi Marshall, features leaves and tiny flowers on a single stem that faces diagonally. On the next photo page, there's an example showing the look of four of these squares joined.
For a 4-dc mesh, total starting chain = 124 chains - that's a beginning chain of 121, plus chain 3, (which will count as first dc of first row), which makes a total starting chain of 124 chains. Begin by working a double crochet in the 5th chain from the hook. Follow chart for placement of solid mesh and open mesh for each row. For a refresher on how to do open and solid mesh, see How to Filet Crochet - Basics. Working any square chart in 4-dc mesh results in a look that is wider than tall. Some people use treble stitches instead of double crochet to achieve the same dimensions of the look of the chart. Another option is to use 3-dc mesh instead (see below).
Chart is worked starting at the bottom right; work first row right to left. Second row is worked left to right. Continue alternating row directions in this same manner, following chart. In the example above, the chart was worked with white squares as open mesh and black squares as solid mesh.
The starting chain to work this chart in a 3-dc mesh is 84 chains. The advantage of 3-dc mesh is that the finished dimensions will have a look closer to the dimensions of the chart.