I would remove number 3 and the moped picture. Use the shower pic as profile, the outdoor green jacket as second pic and the other 3 random order.

First and fourth picture are best, the rest are not really good.. Also you should trim the beard and change your hair style

If she wants to see you on her birthday I would give her a small gift but otherwise no. And if you are gonna hangout on Valentines i wouldnt give her a gift, I would just arrange a nice date.

I would say the second one is the only one that works

I would keep 1, 3, 6 and delete the rest. Then I would try to add a shirtless picture if you are fit and a picture with you and the dog.

"Good, sounds like my type"

Looks good in my opinion, im not sure about the Warning thing but you could always try it for a couple weeks

I would say black/white and jungle are the best. I would have try to add one activity/travel photo and one shirtless if you are fit.

Since she is asking if he is seeing other girls, that usually means that she really likes him. An answer like this would make her feel that you just wanna fuck and dont care about her and she might not wanna see you again.

"Sometimes but i stay pretty busy with work" then you could write something like "I like you and even though i talk to other girls, when im with you the only thing on my mind is you, you ́ll never see me text someone else or think of someone else when im with you"