To create the team, you need to select minimum 3 & maximum 6 batsmen.
Selection of taking more or less batsmen depends upon the Pitch. For the Batting pitch select 4 - 6 batsmen & for the Bowling Pitch, select 3 batsmen.
Select the players which are in form by looking at the previous records.
Do not select both the openers from one team. Pick one from each team.
Pick the batsmen who bowls also. This will help to score more points.
Select the batsmen in order from each team. Pick one opener then 3rd batsmen from each team. Rest would be All rounders and bowlers.
Select the batsmen based on the team performance don't depend on one team. If both the teams are performing well in the series then select 2 batsmen from each team, if only one team is performing well, then select more from that team and the rest from the other team.