Using the same reference, create two paintings, each unique in scale (for example, a 5x7 and an 8x10). The paintings you create should be different compositionally - take advantage of cropping/modifying the scale/shift in focal point and build two separate pieces.
Keep the scope of your brushwork the same in the smaller piece as in the larger one, meaning do not use smaller brushes simply because your painting itself is smaller.
Work on them simultaneously if possible. Pay attention to the placement of marks, comparing and studying your decision making process inside each painting and as comparisons and contrasts.
The goal of the exercise isn't to make two identical pieces, but to create two separate pieces that share a spark of inspiration, while at the same time paying careful attention to the different marks/decisions in each.
You are welcome to use my studio kitten, Mona Lisa, as your inspiration, or choose a photo/setting of your own.
Please be sure to follow the spirit and the letter of the challenge.
For example, each submission must be painted after the challenge is posted.