Create interesting character interactions. Maybe have Darth Vader meet Edward Elric and have them have a philosophical debate about power and sacrifice. Also, develop a unique plot. Don't just copy existing storylines. Maybe in an fma and Lord of the Rings crossover, the One Ring has some connection to the Philosopher's Stone and that's the central mystery of the story.
First, know both universes well. For an fma crossover, you need to understand the rules of alchemy in FMA and the characteristics of the other universe you're crossing it with. For example, if it's a Star Wars crossover, know about the Force and lightsabers as well as alchemy.
Pay attention to the tone. If you're crossing FMA with a light - hearted anime like One Piece, you might need to find a balance between the more serious tone of FMA and the comical nature of One Piece. And don't forget to proofread and get feedback from other fans to improve your fanfiction.
Look to Chapter 242 for the clearest answer. It begins with Just when Jiang Yan called to heaven and earth in vain, he looked up and..., keeps building through Immediately, he excitedly raised both hands and waved vigorously., and lands on Just as he pushed open the creaky wooden door, a huge dead.
The best chapter pointer here is Chapter 243, "How Could It Be Her?!". It opens with Hahaha, the young master's face has gone white, but I got a scare just now... and closes on Perhaps feeling that the atmosphere had become unbearably tense, Director....
If you want the clearest chapter reference, go to Chapter 280. Early on, The small mountain village was already dark and lightless at night, and...; later, the chapter leans on Zhao Lang didn't dare to waste time; he took his flashlight and hit the....
A practical answer is Chapter 208, because it turns the idea into a concrete scene. The chapter opens with Jiang Yan clicked his tongue, "What's this about money?, adds pressure through After the staff counted, she had a total of 22 points, which was a..., and ends on Seemingly sensing the raging.
A practical answer is Chapter 240, because it turns the idea into a concrete scene. The chapter opens with Wuuuuh He Bao truly deserves it, Mom always knew you could do it!"..., adds pressure through Why did Director Sun read out Jiang Yan's name instead of Shang Shaojing?!, and ends on Right.
A practical answer is Chapter 229, because it turns the idea into a concrete scene. The chapter opens with Huo Ziyang's face had already turned deathly pale., adds pressure through It looks like we need to continue working hard too., and ends on Isn't it enough to teach a child a lesson when he.
A practical answer is Chapter 247, because it turns the idea into a concrete scene. The chapter opens with Facts have proved that arch-enemies often understand each other the best., adds pressure through Madam, please receive your two thousand catties of red sweet potatoes."..., and ends on Why.
Look to Chapter 239 for the clearest answer. It begins with I can't believe it, I thought the live broadcast was over, but here's a..., keeps building through Now, they have to vote for who transformed the most successfully., and lands on Wen Jiaojiao was happy, but when she saw the total score.
Chapter 274 is the strongest chapter-level answer because it starts from Upon hearing this, Officer Xu became even more excited, but catching a... and follows through on I believe with some rest, he will recover." Relieved at last, Hu Zi's....
Look to Chapter 238 for the clearest answer. It begins with Jiang Li was actually first on all three leaderboards?!, keeps building through Could it really be that outrageous?!, and lands on And, to Zhou Xu's alarm, they did find a problem..