Lupe nos muestra la revista a nosotros.
Or
Lupe nos esta mostrando las revistas.
It would tienes because it goes with tú. I'm not sure how to really explain it but that's the ser you would use with tú. I hope this helps!
Spanish is my second language so no problem:
English: "I like yo stay inside and watch movies on the weekend"
Spanish; " A mi me gusta estar adentro y ver peliculas en el fin de semana"
Hope this helps you!!