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For my card I've used a digi from Sliekje stamps, you can find them on her blog for free.
I've sized it in Photoshop and added the sentiment. I've put the Welcome between brackets as I'm sure the flower that finally came up and the human who grew it weren't too happy about a playful and naughty kitten, also a sign of Spring ;-).
I've printed the panel on Ecoline printable watercolor paper and colored it with Faber Castell Polychromos pencils and Odourless spirits.
Adhered the panel to a cardbase with tape runner. The printable watercolor paper from Talens, is very thin, doesn't like a lot of water or it will buckle, but it was fine with pencils and spirits, but it's also too thin to act as a cardbase.
For more information on the AAA Cards Challenge, see this.