An image that can be used for PowerPoint Presentations, handouts and online

I'm creating a series of free mini self-confidence workshops to be delivered to charities and different types of support groups. I will also put these and other materials online. I'm looking for an image that I can use in PowerPoint presentations, Word documents and in my online training academy.
The image needs to be 4 - 4.5 cm wide and up to 7 cm high
I want two balloons (the one on the right very slightly overlapping the one on the left
The words inside the balloons are 'Self' (left-hand balloon) and 'Confidence' (right-hand balloon)
I want each balloon to have a piece of string attached to it
Instead of a bow to join the strings together, I want the word 'happiness'. I want it to appear as this is written from the string attaching the two balloons
I will provide the RBG codes for the balloons when I assign the project
I require written confirmation that I own the copyright for the image when it's handed over to me
If you give your permission, as a thank you, I will credit you with designing the image