Hello,
my name is Liliana, i have over ten years of experience as a designer, and what i like most is to illustrate, that's why i like this project.
Please, visit my Freelancer portfolio https://www.freelancer.com/u/webpolis.html
in order to evaluate my work, there you can see some samples of velentines stickers,
i can send you more samples, if you want to.
I use Illustrator for this kind of projects, i can deliver you the illustrations as vector format to print,
and also saved as any other format you may need, like JPG or transparent PNG, for example.
I found this project really enjoyable and interesting, and i would like to create 25 originals, cute and fun
stickers, on the same style of the current ones you attached.
I hope we can work together, please, contact me if you want to talk about the project, or if you want to see some more samples of my work.
Best regards.
Lili.