android supporting different resolution with layout folder

I am creating layouts for an app but the problem is layout is perfect on all large devices but not suits on hdpi. So I think to create hdpi folder separate for layouts. I choose android resource directory and choose density as hdpi but not working for only hdpi devices. I tried dimensions and screen width also but not working. Can you please help me how can I improve it.

Layout Code

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorPrimary">


    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/combine_bg"
        android:layout_marginTop="@dimen/dp20"
        android:layout_marginBottom="@dimen/dp20"
        android:layout_marginRight="@dimen/dp20">


        <TextView
            android:id="@+id/txtWelcomeTo"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/welcome_to"
            android:layout_marginTop="@dimen/dp170"
            android:layout_marginLeft="@dimen/dp10"
            android:textSize="@dimen/dp15"
            android:textColor="@android:color/black" />


        <TextView
            android:id="@+id/txtPrivateCare"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/the_private_care_masters"
            android:layout_marginLeft="@dimen/dp10"
            android:textStyle="bold"
            android:textColor="@android:color/black"
            android:layout_below="@id/txtWelcomeTo" />


        <EditText
            android:id="@+id/etemail"
            android:layout_width="@dimen/dp190"
            android:layout_height="wrap_content"
            android:layout_below="@id/txtPrivateCare"
            android:layout_marginLeft="@dimen/dp10"
            android:hint="@string/email_phone"
            android:layout_marginTop="@dimen/dp20" />


        <EditText
            android:id="@+id/etPassword"
            android:layout_width="@dimen/dp190"
            android:layout_height="wrap_content"
            android:layout_below="@id/etemail"
            android:layout_marginLeft="@dimen/dp10"
            android:layout_marginTop="@dimen/dp10"
            android:hint="@string/password"

            />


        <ImageButton
            android:id="@+id/loginButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/login_btn"
            android:background="@android:color/transparent"
            android:layout_below="@id/etemail"
            android:layout_marginLeft="@dimen/dp25"
            android:layout_toRightOf="@id/etemail" />


        <CheckBox
            android:id="@+id/chkRememberMe"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/etPassword"
            android:layout_marginLeft="@dimen/dp10"
            android:layout_marginTop="@dimen/dp10"
            android:text="@string/remember_me"
            android:textSize="@dimen/dp12"

            />


        <TextView
            android:id="@+id/txtForgotPwd"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@id/chkRememberMe"
            android:text="@string/forgot_pwd"
            android:layout_below="@id/etPassword"
            android:layout_marginTop="@dimen/dp17"
            android:textSize="@dimen/dp12"
            android:layout_marginLeft="@dimen/dp15"

            />


        <TextView
            android:id="@+id/txtSignUp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/not_have_account"
            android:layout_below="@id/txtForgotPwd"
            android:layout_marginTop="@dimen/dp30"
            android:textSize="@dimen/dp12"
            android:layout_marginLeft="@dimen/dp15"

            />


    </RelativeLayout>
</RelativeLayout>

And screenhsot of .psd which I want to create

And mine layout on hdpi device:

How can I resolve the problem please help

dimens.xml

<dimen name="dp1">1dp</dimen>
    <dimen name="dp2">2dp</dimen>
    <dimen name="dp3">3dp</dimen>
    <dimen name="dp4">4dp</dimen>

dimens.xml-large

<dimen name="dp1">1.5dp</dimen>
<dimen name="dp2">3.0dp</dimen>
<dimen name="dp3">4.5dp</dimen>
<dimen name="dp4">6.0dp</dimen>

dimes.xml - xlarge

 <dimen name="dp1">2.0dp</dimen>
    <dimen name="dp2">4.0dp</dimen>
    <dimen name="dp3">6.0dp</dimen>