HALF ELF
Traits
Creature Type : Humanoid
Size : Medium (about 5-6 feet tall)
Speed : 30 feet
Life Span : 200 years on average
Special Traits
Combat Dilettante: You know weapon mastery in one simple weapon or one cantrip from the cleric, druid, or wizard class.
Darkvision : You have Darkvision with a range of 60 feet.
Dual Heritage: You can take feats that have either elf or human as a prerequisite (as well as those specifically for half-elves), as long as you meet any other requirements.
Extra Language: You know one additional common language.
Fey Ancestry : You have Advantage on saving throws you make to avoid or end the Charmed Condition on yourself.
Skill Versatility: You gain Proficiency in two skills of your choice. At the 5th level, you gain Expertise in a skill you have Proficiency in.
HALF ORC
Traits
Creature Type : Humanoid
Size : Medium (about 6-7 feet tall)
Speed : 30 feet
Life Span : 80 years on average
Special Traits
Darkvision : You have Darkvision with a range of 60 feet.
Dual Heritage: You can take feats that have either human or orc as a prerequisite (as well as those specifically for half-orc), as long as you meet any other requirements.
Furious Assault: When you hit with an attack roll, you can make the hit a critical hit instead. Once you use this trait, you can’t do so again until you finish a Long Rest
Relentless Endurance : When you are reduced to 0 Hit Points but not killed outright, you can drop to 1 Hit Point instead. Once you use this trait, you can’t do so again until you finish a Long Rest.
Put these in the SRD and it's all fine.