The Norway international returns to the WSL in hot form having shone for Hammarby last season, grabbing 15 goals and six assists in 26 games.
She also scored three goals in the Champions League and has transitioned into the left wing-back poisiton from a midfield.
Her versatility and "attacking edge" attracted Tottenham - and Blakstad said manager Martin Ho was a big reason as to why she agreed to join.
"I've been following Martin in the league in Norway, playing against him and seeing how he coached Brann," said Blakstad.
"I think he brings a lot of the same principles to Tottenham. What we're seeing from the summer until now has been really positive work.
"He's really engaged in the game and gives a lot of feedback. I really like how he sees the tactical parts of the game. He can help every individual player to develop.
"That's a big part of why I chose Tottenham because in my mind, it's important for me to become an even better player, not only to win games."
Blakstad is one of five players to join Tottenham so far in the January transfer window as they hope to build on a successful start to the season.
Ho's side sit fifth in the table with six wins from their opening 11 WSL matches and are just two points adrift of Manchester United.
"We can just keep building on that. Obviously there are a lot of good teams in the WSL and the competition is really high, but I think we have a good mix of players," added Blakstad.
"Tottenham is a big club with great ambitions and want to be competing to reach the top three now and then in the long run, get into Europe and play well.
"The biggest goal is to as often as possible play on the big stages and against the best players in the world. The Champions League is something everyone wants."