Go to shopping

I'm practicing to use the phrase "go to shopping."
Your comments and corrections will help me to use it more fluently.

いらっしゃいませ
May I help you?
What can I do for you?
見てるだけです。
I’m just looking.
I’m just looking, thank you.
バッグを買いたいのですが
I’d like to buy a bag.
I’m interested in buying a bag.
このジャケットを試着してもいいですか？
Could I put on this jacket?
May I try on this jaket?
このジャケットはサイズが合いません。
This jacket couldn’t fit to me.
This jaket isn’t my size.
これは大きすぎます
It’s too big.
This is too big for me.
高すぎます。
This is too expensive.
That’s too expensive.
これにします
I decided about that.
I’ll take this one.
このバッグはいくらですか？
How much is this bag?
もっと安いのはありませんか？
Do you have a cheap one?
Do you have anything cheaper?
クレジットは使えますか？
Would I use my credit card?
Could I use the credit card?
May I pay by credit?
妹にあげるお土産を探しています。
I’m looking for souveniour for my sister
I’m looking for a gift for my sister.
サイズがわかりません。
I don’t know about her size.
I don’t know what size.
試着してもいいですか？
Could I put it on?
Can I try this on?
試着室はどこですか？
Where is a fitting room?
Where is the fitting room?
もう一度試着してもいいですか？
Can I try this one once more?
May I try it on again?
小さすぎます。
It’s too tiny.
This is too small for me
It’s too small.
ゆるすぎます
It’s too loose.
ぴったりです。
Just fit it for me.
This is just my size.
今日のセール品は何ですか？
What about is it sale goods today?
What’s on sale today?
贈り物用に包んでください。
Please wrap it by gift.
Can you wrap it as a gift?

I really appreciate your help.