2 Mistakes

[youngump]

So I had a JH game (1 Man FP) yesterday and did two things wrong for which I would like advice.

1. With runners at second and third, the ball is hit to F6. F6 looks to be going home and then gives up and goes to third. R2 instead of sliding runs to the left field side of third and comes in standing up just after the fielder gets the ball. I've positioned myself up the line in foul territory and see absolutely nothing. I made my best guess safe, and from the players reaction I got lucky. So where should I have gone on a play like this?

2. In an IF situation a ball is popped up in the infield but not very high and no one is in a position to field it. I start to mistakenly call infield fly. I get out the fly part and do not yell batters out. I catch myself enough that I'm not very loud and with all the noise nobody hears me. The ball falls in and they throw home where the runner is safe.
I quitely walked back behind cursing myself and glad that no one heard. The question is do I have an obligation to fix this in any other way? I don't think I put the defense or offense in jeopardy but wanted another opinion.
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