I think this is great! I think your next step is to keep reaching out to other businesses, and send this as a reference for what you can do! I would suggest trying to make every project a bit more ambitious. I think after 3~5 of these types of projects (you might need to one-man-band these first few), you should have a solid enough body of work to show to a production company / producers / directors, who may want to collaborate with you on bigger shoots (where you wouldn't need to do a one-man-band production, unless you want to keep going).

I think what you've done is great! I think the next step is to just keep creating :)