My first cards( Rurouni Kenshin/Samurai X themed)

[xXLeonXx]

these are my first 3 cards and they are Rurouni Kenshin/ Samurai X themed, i would like helpful criticism and tips in order to improve. comments would be much appreciated. im sorry but i couldnt get the images of the cards uploaded so i listed the information next to their card names and their effects below them

here are the effects of the cards:

Sekiho Survivor-Sanosuke Sagara: Level 6 EARTH Warrior-Type, original ATK 2100, original DEF 2300
If there is 1 "Kenshin Himura" on your side of the field then this card will gain 200 ATK points. If there is 1 "Kamiya Kaoru", 1 "Myojin Yahiko", or 1 "Takani Megumi" on your side of the field then this card will gain 100 ATK points.
If this card is destroyed and sent from the field to the Graveyard as a result of battle, Special Summon it during the End Phase of this turn in face up DEF position with 1800 ATK and 2000 DEF. You can only use this effect once per duel.

Legenday Slasher-Kenshin Himura: Level 7 EARTH Warrior-Type, origianl ATK 2600, original DEF 2200
When this card defeats an opponent's monster as a result of battle, instead of the monster going into the Graveyard, the monster returns to your opponent's hand instead.

Notorious Slasher-Hitokiri Battousai: Level 9 EARTH Warrior-Type, original ATK 3500, original DEF 3200
This card cannot be Normal Summoned or Set.This card cannot be Special Summoned except by Tributing 1 "Kenshin Himura" and 2 Level 5 or above Warrior-Type monsters.If this card is in ATK Position at the beginning of your Battle Phase and if your opponent has at least 1 Monster Card on his/her side of the field, then this card must attack 1 monster that is on your opponent's side of the field. You can negate the effects of Monster Cards that designate this card.