Can I do half-elf half-dwarf?

I think so.

Just in case I can't cross species like that, I am adding another poll.

Quote from RubyStargirl >>

Can I do half-elf half-dwarf?

Quote from AutumnLifemaster >>

I think so.

 Are you completely sure?

No

Half-elf/Half-dwarf (here after refered to as dwelf) is not an official race. If you want to play as one, you will jave to homebrew it or use one of the many public homebrews that exist for it.

As for which I recommend, depends of what class/build you are going for.

Thanks!

Hi! Thanks for helping her. She's been pestering me about it.

Or just use the official stats for a half-elf. A child of an elf and a human is as half-elven as a child of an elf and a dwarf. Use the "Ability Score Increases of your choice" and "Skill Versatility" traits to make them half dwarven. 

Quote from AutumnLifemaster >>

Hi! Thanks for helping her. She's been pestering me about it.

 Thanks!^^^^^^^^^^^

Please come to my thread too.

I'd recommend making a sub-race - you can have an Elven Dwarf where Dwarf is the dominant side and have some Elvish features. Or you can have the Dwarven Elf where Elf is the dominant side and have some Dwarvish features.

I made these as examples:

Elven Dwarf :- https://www.dndbeyond.com/subraces/169027-elven-dwarf

Dwarven Elf :- https://www.dndbeyond.com/subraces/169038-dwarven-elf

Quote from Acme >>

Or just use the official stats for a half-elf. A child of an elf and a human is as half-elven as a child of an elf and a dwarf. Use the "Ability Score Increases of your choice" and "Skill Versatility" traits to make them half dwarven. 

 Alternatively, you can replace skill versatility with dwarven resilience and call it a day.

Just so you know,this is my first time playing.

But then again, your dm might want you to only do one.

Check with your DM to see if they will allow homebrew. If this is an Adventurer's League game, the answer is always no. Otherwise most can be accommodating as long as you aren't asking for too much.

I would do the following, as a starting point:

• Ability Scores: +2 Dex and +1 Con or +2 Con and +1 Dex
• Speed 30 and Medium sized
• Darkvision
• Chose 2 of "Major Traits", 1 elf, 1 dwarf
  • Elf Traits
    • Keen Senses: Proficiency in Perception
    • Fey Ancestry: Advantage vs charmed and cant be magically put to sleep
  • Dwarf Traits
    • Dwarven Resilience: resistance to poison damage and advantage vs poison saves
    • Armor Training: light and medium armor proficiency
• Choose 1 of "Subrace Traits"
  • Fey Step: 30 foot teleport as bonus action once per short rest.
  • Fleet of Foot: +5 movement speed
  • Dwarven Toughness: +1 HP per level
  • Duegar Resilience: advantage vs charmed and illusions
• Choose 1 of "Minor Traits"
  • Trance: 4 hours of sleep instead of 8
  • Stonecunning: expertise in history when analyzing stone work
  • Weapon Training (choose 4 of)
    • Elf Weapons: longsword, shortsword, longbow, shortbow
    • Dwarf Weapons: battleaxe, handaxe, light hammer, warhammer

Also, welcome to D&D!