Hello Marta,
Hope you are doing well.
I read through the job details extremely carefully and I am absolutely sure that I can do the project very well. I have worked on similar projects to what you are looking for, and I am confident I can exceed your expectations. I have excellent experience in Shopify, HTML 5, CSS3, Responsive website design, cross browser websites etc.
I can complete your project on time and within your budget.
I am seeking better opportunities in long term job because I want to build a long term good relationship with my clients.
I am excellent in communication and consistently available on Skype and email. I will communicate with you regularly and will give you status report of development as well as take your reviews on work to improve website. I hope you will like my profile and will give me opportunity to talk with you on Skype for further discussion.
Best Regards,
Ansh Mehta