Welcome to Upwork! The maximum size of the portfolio thumbnail is 5mb and 25mb for attachments. As we don’t have any specific recommendation regarding the ideal image size, please read this community thread where you can find discussions regarding this meter from other community members, and please read this help article for more useful information about profile portfolio. Meanwhile, please check out this thread and go through the guides, tutorials, courses, videos, Help articles and Community discussions, designed to help you start bidding successfully and winning jobs on Upwork. You may check Hiring Headquarters link in the thread I mentioned, and find there some excellent articles for both, improving profiles and writing good proposals. You may also read this article to help you avoid questionable jobs. Afterwards, if you have any questions feel free to follow up in the Community and we'll gladly help you with them.
Thank you so much for your response. I'll check out those links in order to learn how this marketplace works.
I have one more question. Why I don't see any proposals? Do I have to complete some tests first?
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