Traits of a person manifesting in certain ways in the next life
For the physical appearances you should read Lakkhaṇa Sutta. But it is not guaranteed that you can have specific physical appearance in next life because how much extent averse effects you did previous lives and current life. Buddha only have this exceptional and scientifically impossible physical characteristics by practicing specific wholesome acts in many uncountable lives. By practicing the Sila, Samadi and Panna taught by Buddha in this sutta you can attain Nirvana as Buddha or student of Buddha, that is for sure.