You can use cohesive colors, carry the flooring throughout, paint the walls the same colors, etc.
comfortable furniture to make it look inviting.
Try putting an indoor outdoor rug there some wicker furniture make it cozy looking plants all over coffee table and tables and make it look homey like your inside try using same colors to exstend it out side
Comfy furniture, curtains. Check out mine here! And an updated photo from a few nights ago...