Questions in UNDERTALE

Ya know, I've been so curious on how to make an Undertale fangame, and I'm not talking about the software's, I'm talking about the coding itself, so can anyone help me with that

I have distrust take ideas

would you like to hear them?

would you buy temmie armor?

guess what my next sprite is from this preview

have ya ever play undertale.because if ya dont,ya not a fan-art.get it.its a fan,but an art.

Hİ

https://www.youtube.com/watch?v=lmy6rcn_v3A

Is this song suits for Aoko, a peace-loving person and friend of everyone?

Comparision of Aoko and Byakuren.

Aoko is called the "Angelic Byakuren", and both are somewhat similar.

A coincidence?

What will i name it :<

ok boi's know any fan games that will make me happy to play (btw it can be single-fight or full just not demo's)

remember: all suggestions are appreciated (also if u can put a link but its optional)