There is another challenge going on about kissing which can be seen here but I decided to submit for this challenge instead since it's more related.

I have used bubble brushes for the background with light yellow / orange rendering around them to give a soft touching and bubbling feeling (I don't know if bubbling is a word but haha that's what I feel when I drew them). A soft white gradient border have been added to give more puzzleshiping feeling.

Brushes - Bubble from Deviant Art