I do not own a sewing machine (yet), so all of my reconstructions are hand made.
In this one, I used a tank my sister-in-law gave me. The tank was boring and had very tight armholes. So I cut out the hem around the armhole to make it larger and added some flower applique to the left of the tank for effect.
Started with an olive green tank
Then I used patterned and white fabric to cut little circles
Measured the circles with a little medicine tub (you can used compass if you have it)
These are the circles of fabric I got
Then you fold the circles twice and sew in the center
And you are left with something like these
I stiched the arm holes with red embroidery thread
I then sewed the flowers to the left side of the tank
UPDATE: Since someone asked, I am adding pics of me wearing the tank. I would add bigger flowers if I intended to wear the tank at night. I would also add them in different colors, such as hot pink. But since I intended the tank to be a day shirt, I opted for a more demure look.