You could add "ja dam ci klapsy",
The words are correct, the feel is terrible and cartainly gives away a foreign speaker.
It is unlikely that "dam ci klapsy" would be used. "Dami ci klapsa" is defintely correct.
Also, I doubt that a native Pole would start this with "Ja". That is bad style.
In general, it is best to avoid starting a sentence with the personal pronoun "Ja", unless the stress of the sentence is on that pronoun (for instance to differentiate form others, or to avoid confusion). For instance, once you wrote "Ja poprosze kawe". That was correct, but the context was different.