Who can help me with this?

People, I have a huge doubt. Is it OK if I write: I think collecting marbles is good. Would you like trying to collect ing shells?

Está casi perfecto Romina, felicidades. 

Si tienes algúna duda más, no dudes en preguntarme, te ayudaré con mucho gusto.

¡Que tengas un día genial!

Who can help me with this?

People, I have a huge doubt. Is it OK if I write: I think collecting marbles is good. Would you like trying to collecting shells?