I agree with tessagin, always make a sample block, whatever pattern you are using. Best to know early if your seam allowances are correct, or if the pattern has a mistake in it.
If you love scrappy Bonnie Hunter has lots of free scrappy patterns and her instructions are very complete and thorough.
http://quiltville.blogspot.com/p/free-patterns.html
Happy Quilting! Let us know how it goes