Hi Sarah, Both your examples are gorgeous. You don't mention if you have previous general sewing experience. Example 2 has curved seams. They could be tricky for a new sewer, and are also time-consuming.
I started out with table runners to build up my confidence and to see the finished result quickly. But that's me.
As far as general advice is concerned, precise measuring is of utmost importance, as is the 1/4 in. seam!
I'm sure you'll get lots of good information from other quilters on this site.
Good luck to you, and keep us posted!