This is a very interesting idea that many options for potential.

Just a couple of suggestions:

-More description of the Chicano male (eg. a reckless and unrefined Chicano youth)
*This will create more character contrast with the cultured Salsa Dancer

-Identify the circumstances in which the two characters (eg. At a latin dance festival or a night-club event or could be something as simple as a friend’s birthday party)

-Create the stakes in which the story takes place.
*This is perhaps the most IMPORTANT part of your logline.
Why do these characters ‘from two dissimilar worlds collide’ form an incredible dance together?
To answer this, Place your characters an environment that DISAPPROVES their relationship.

An example of this, the dance movie ‘Shall we dance’ (original Japanese version) is about a Stiff Accountant who falls a mysterious Dance Instructor that he spots on the train back home.He decides to take a chance and goes to her dance studio for lessons. Here, the premise captures the audience’s attention because the Character’s relationship is disproved by the conservative Japanese modern society surrounding them. This is made possible because of the stakes raised.