Hi,
I'm DesignStorm15 , a freelance designer in freelancer.com. Recently I've complete some icon and illustration jobs in freelancer.com contest. Please visit my profile to ensure what can i do for you.
According to your project description, i understand that it's simply an illustrating project. You need your pen sketches to convert into vector form. I've the latest version of illustrator to convert your sketches accurately.
It's good if you supply me your all sketches in png format. Because it produces or converts into fine and smooth vector products with keeping the some quality. However, we are open to discuss further detail when hiring.
Regards,
DesignStorm15