Greetings, George,
Are you asking because you haven't been getting many  impressions lately? Because sometimes the meditation   process gets so routine that we forget to focus on what we're doing there--that's what's happened to me anyway at several points along the way. The intent to meditate might require some new techniques once in a while just to keep focused.
bets

George, I would suggest more meditating. That is when I get the most impressions/information. Good luck.

Love, Mairlyn

Good,

One person answered you have to give yourself that intent, good advice.
Not that meditation is of utmost importance into which to implement that intent.  You simply need to be aware and acknowledge that your having the intent to receive more impressions.
The fact of the matter, though, is that you are constantly recieving impressions anyways from ...places...within yourself.
Firstly,
You have to have the intent  to notice that and also understand there has to be a way to perceive and recognize when and what the impression is you are receiving and from where and how and for what reason you are receiving it.

..But, a question is in order before i can tell you how to get more impressions.
What kind of impressions are you looking for and for what reason are you looking for them?

How do you get more impressions concerning what?

Let me know your answer and I'll tell what you are not understanding in order to adjust your perception into an awareness where you notice the impressions, intuitions, and knowledge being communicated constantly.

Before that, what cant you do?

You will not need a guide to tell you that. You know what you can and cant do.
And what you cant do is understand your recieving impressions, before that, though you are also holding beliefs that are dictating what you can or cant do? Correct?...
beliefs such as judgement and morality and ethics.. possibly.... Right or wrong basically, yes?