Unless absolutely necessary, you should not name anybody else in your confession. Your confession is just that, yours. You list where you "fell short", where you stumbled, etc. Don't give too much detail. If you Father Confessor wishes for more, he'll let you know. ...and don't make excuses....just state the facts, as humbling as they may be.
Our 7 year olds go to their First Confession this Sunday (Palm Sunday). I have taught them for the last 3 Sunday's about the Faith, various prayers, what to expect...and what is now expected of them.
I did a final walk through with them last Sunday. Before we went in to the church, I ripped up little scraps of paper and had each child write down their sins from the previous week. I gave a few examples..to get them going - didn't listen to parents or teachers, shoved their brother or sister, yelled, stole something, etc. I promised them nobody would see these papers...so, they should be completely honest and write the truth. ...and they did. Some even asked for more slips of paper! :-)
Each child had a paper bowl, and they piled their sins in to it. We then went to the church. I stood in for the priest (who was busy after a panachyda in the church hall) and explained that they need to put their right hand on the Bible, etc. To help them feel at ease, I reached out and took their bowl of sins and held it for them. I explained what would happen....to the end when the priest would recite the prayer..and remove his hand, etc. At this point they were to kiss the Bible and Cross....and I returned their bowls to them. Their eyes popped out. While they were concentrating on where they were putting their hands, etc....I emptied their bowl behind my back...and what they got back...was an empty, sinless bowl. :-) They were amazed, but, understood what Confession was all about. I told them the bowl is now empty...try to keep it that way.
So, the kids simply wrote their sins...no other names...no explanations....
Keep it simple.
Don't worry too much. It's not as stressful as you are thinking. It's refreshing. ...a new start. How blessed are we that we can have a new start...over and over and over....