The card that I've made is simple but very effective. All I used was the "blob" from the Happy Watercolor stamp set as well as my "C" acrylic block. In this case, however, instead of simply using the acrylic block for mounting my stamp, I also inked it up and used it like a stamp.
On a piece of 3 3/4" x 5" Whisper White cardstock, I began by inking the "blob" with Marina Mist and stamped it towards the left side and just under 1/2" from the top. Then I inked up my "C" block with Crushed Curry and stamped that partly over the bottom of the Marina Mist. I cleaned the "C" block and then inked it up with Tangerine Tango and stamped that partly over the bottom of the Crushed Curry. Then I inked up the "blob" again, this time with Gumball Green and stamped it partly over the bottom of the Tangerine Tango. That brought me within about 1/8" of the bottom of my Whisper White. This stack of colours wound up being approximately 1 3/8" from the right hand side of the cardstock at the closest.
I gave the inks a few minutes to dry thoroughly and then inked up the flowers from the Serene Silhouettes stamp set with my StazOn black ink and stamped the image onto the column of colours, approximately 1/8" from the bottom of the Gumball Green.
Then I took the "I'm here for you" stamp from the Petite Pairs stamp set and stamped that in black StazOn near the top right corner of the cardstock.
I used Marina Mist as my base cardstock and had a layer of 4" x 5 1/4" Basic Black cardstock on top of that before mounting the stamped Whisper White cardstock.