作つくり損そんじる

ichidan verb

fail to make; mess up making; botch the making of

Used when someone attempts to create or build something but makes a mistake, resulting in a flawed or failed product.

• ケーキを作つくり損そんじて、ぐちゃぐちゃになってしまった。

  I messed up making the cake and it turned into a mess.

• 模も型けいを作つくり損そんじないように、説せつ明めい書しょをよく読よんだ。

  I read the instructions carefully so as not to botch making the model.