Knight tips.

I think this might help, not sure, my first attempt at such a thing. (I am hoping its ok)

Is it worth me making more?

Nice!

looks good

They are pretty basic, the aim is to just help a little, it is so hard whence starting out.

Your second picture is interesting if your goal is to teach beginners, although I'm not sure that it resolves more confusion than it creates.

The first picture is weird. There is no mention of any opening. In the Italian (and Spanish) white usually chooses this Re1 and Nb1-d2-f1 knight route because the c3 square is not available (white plays c3 and then d4). But in your picture c3 is not played, so the b1 knight is probably best in c3. Also, this slow maneuver is okay if the opening is slow and the center is (temporarily) closed. But it's a very bad idea to make 3-4 moves with a piece in other, faster openings, where it can lead to a quick loss. So no, as general advice this is not good .

Very helpful

I agree in part, I do say to be used as part of a well principled opening. I might remake the diagram. I appreciate the comment, it very easy to see a poorley presented piece of advice and "walk on by".

We are all here to improve ;-D

Like magipi, I have questions regarding the advantages of placing the knight on f1, especially during the opening. I’m a big fan of Bruce Pandolfini’s The 64 Commandments. See link below.

https://www.chess.com/article/view/the-64-commandments

The position you show breaks two of the commandments.

24. Develop your pieces quickly, preferably toward the center (especially Knights, which often are "grim on the rim").

26. Don't waste time or moves. Try to develop a new piece on each turn. Don't move a piece twice in the opening without good reason.

Your pawn on f1 located on the rim of the board, only impacts 4 squares. The f3 pawn more centrally located, covers 8.

If working with kids, I’d highly recommend using the commandments as guidelines and a jumping off place to introduce new concepts.

I like the 2nd image as it shows how, unlike the other pieces that move/capture along straight line moves, the Knight operates in a circle. Knights are often described as moving in an "L-shape" type thing, but that makes it harder to recognize the circular nature of it's field of control.
Also, the alternation of it's move (light square to dark, and dark to light), can really help one when looking for danger and opportunity. If it is your move, knight forks may arise when your opponent has two pieces on the same colour as your knight; as you will hop to a square of the opposite colour and end up attacking squares of the same colour you are currently on. When looking at your opponent's options, double check where you have two or more pieces on the same colour as your opponent's knight, and be careful about where you move your piece to. It's similar to how one wants to be careful about putting pieces on the same rank/file or diagonal when considering rooks and bishop (and queen) moves. 
The tricky think about scanning for danger due to knights is spotting when your opponent has moved their knight and you're trying to choose your response. Now you have to look at your pieces that are on the opposite coloured squares to the knight, as those are the ones that could potentially be forked already!
In my experience, straight line threats/opportunities are easier to see, and it is the circular nature of the Knight's territory that requires that increased attention.