Answer:
Neither your dress nor your look impresses me much.
Step-by-step explanation:
Sentence agreement occurs when the a singular subject matches with a singular verb, and when a plural subject agrees with a plural verb.
When singular subjects are linked by the words neither, either and nor, then the verb is also singular. In this case, both your dress and your look are singular subjects, so the verb takes the singular form as well.
Similarly, when plural subjects are connected by the same words, the verb must also be plural. However, when the subjects linked consist of a singular one and a plural one, the verb form agrees in number with the nearest noun.