This is the design from our first daughters nursery that we haven't changed since moving our second daughter into it. I love bright colors so finding material to coordinate was never a problem.
My inspiration for the original room was a Paris themed fabric that we used for quilts, bumpers and further inspiration.
Traditional with a bit of whimsy.
My favorite detail is the black ribbon that my husband hand-painted without a pattern or stencil.
For sure the round crib and the fact that I just switched the rug and fabric for our second daughter.
Try to find one thing you can't live without. Be it a rug, curtains, print, blanket or lamp. That way you can match everything else to it, especially paint colors. If all else fails buy a mix of fabrics in the same color.