flowers in basket are so cute! I like the little touch of netting on the banner too.
Vintage bike and hearts...could be easily made using a vintage bike image and several hearts cut with my Cricut Explore.
It's a fantastic day! by MindyYoung - Cards and Paper Crafts at Splitcoaststampers
The Best Routes Card by Jess Witty for Papertrey Ink (May 2013)
Valentine's Day or just an I Love You card created post on Hero Arts blog...it is another really simple card and so cute.
Thank You Bicycle Card by Dawn McVey for Papertrey Ink (May 2013)
Could try making a stamp out of bike and make a heat embossed bike (watercolor background?).
bicycle card http://www.scrapbookcircle.com/kits/remember-this
Summer Greeting Cards: Homemade Card Ideas to Make
Silhouette bicycle card for Addicted to Stamps