Describe what you did as a child

English:

as a child I enjoyed playing at parks, watching movies with friends and even eating ice cream on a walk with my mom and my dog. My mom would be walking the dog, and I would be walking and eating ice cream.

Spanish:

De niño disfrutaba jugar en los parques, ver películas con amigos e incluso comer helado en un paseo con mi mamá y mi perro. Mi mamá paseaba al perro y yo caminaba y comía helado.

Hope this is good! :)

ah, so ustedes and nosotros are my 'go-to' if i am using spanish mainly in the states? interesting, but still slightly confusing, haha."

it seems that you are a little confused about subject pronouns. yo=i, tú/usted=you, nosotros=we, ustedes=you(plural), ellos/ellas=they.

in the case of vosotros, it is an informal replacement for "ustedes" in spain. similar to using "you all" in english.

even though it is not generally used in conversation outside of spain, it is used many times in literature. i would suggest having at least some familiarity to that form, at least to recognize what it is.