Striped Polka Dot Baby Card

I really wanted to play along with this week's One-Layer challenge, which was to create a baby card inspired by one of these cakes. I was drawn to the striped diaper bag cake (10th photo down the page) and I have this new Hero Arts set, which happens to have a striped polka dot. How serendipitous! I originally was going for multi-colored dots, but the result was pretty abysmal. Actually, there was nothing pretty about it. I ended up just using the different colors in different dots, although there are a couple striped ones in the mix. I'm still not thrilled with the finished product, but I'd already spent waaaaay too long working on this "simple" card -- and I really need to get it mailed off to our friends who've announced they're expecting another little bundle o' joy! The sentiment is from Verve - love the versatility of this set.

Would anyone care to offer any design insights? Are the dots too close together? Are the pastel colors just too washed out? Any and all thoughts are appreciated!