Stamp from Art Impressions Feline set.
Stamped with Memento black ink and coloured with Spectrum Noir alcohol markers on Neenah solar crest ultra smooth cardstock.
The bubble I drew myself and shaded it a little, but it's all a one layer card.
I've tried to make one like my kitties, but failed miserably ;-) black is hard...
Fpr more information on the Less is More Challenge #236, see this