My suggestion would be to find a fabric with a larger scale print.
Also be sure you measure the repeat to make sure you buy enough fabric.
Here is a pic of the four patch posie that I did. If you look on the second page you will see the original fabric. Those flowers are about 3 inches across and the uneven design in the fabric resulted in lots of variations in the blocks..
http://www.quiltingboard.com/t-119054-1.htm